Conference Program
Beijing Time: GMT+8
ICICN
IEEE The 8 th International Conference on Information, Communication and Networks
Organized by Co-Organized by CO-Sponsored by
1 Table of Contents
P.3 Welcome Address
P.4 Conference Committees
P.6 Guideline for Online Conference
P.7 Schedule at a Glance
P.8 Plenary & Keynote Speakers Details
Plenary Speaker I: Prof. Chao Lu
Keynote Speaker I: Prof. Xizheng Ke Plenary Speaker II: Prof. Alexey Kavokin Plenary Speaker III: Prof. Kenneth Grattan FREng Plenary Speaker IV: Prof. David Payne
P.15 Schedule in Details from August 22nd to August 25th
August 22nd: Test August 23rd: Keynote, Plenary and Invited Speeches August 24th: Invited Speeches August 25th: Oral Sessions
P.26 Invited Speeches in Details
P.56 Oral Presentation Abstract
P.73 Listeners
2 Welcome Address
Dear distinguished delegates, We are pleased to welcome you to 2020 IEEE The 8th International Conference on Information, Communication and Networks (ICICN 2020), which will be held online on August 22-25, 2020 due to COVID-19.
ICICN is organized by Shaanxi Normal University, China, co-organized by Xi`an University of Posts & Telecommunications, China, Northwestern Polytechnical University, China, Supported by Nanyang Technological University, Singapore, Macau University of Science and Technology, China, Xi`an Jiaotong University, China, Xi'an University of Technology, China, Huazhong University of Science and Technology, China, Liaocheng University, China, and Scienece and Engineering Institute, USA, etc.
After several rounds of review procedure, the program committee accepted those papers to be published by IEEE in ICICN 2020 conference proceedings. We wish to express our sincere appreciation to all the individulas who have contributed to ICICN 2020 in various ways. Special thanks are extended to our colleagues in the program committee for their thorough review of all the submissions, which is vital to the success of the conference, and also to the members in the organizing committee and the volunteers who had delicated their time and efforts in planning, promoting, organizing and helping the conference.
This conference program is highlighted by four Plenary Speakers: Prof. Chao Lu, The Hong Kong Polytechnic University, Hong Kong; Prof. Alexey Kavokin, Westlake University, China; Prof. Kenneth Grattan FREng, The Royal Academy of Engineering, The UK National Academy of Engineering, City University London, UK; Prof. David Payne, University of Southampton, UK; and one Keynote Speaker: Prof. Xizheng Ke, Xi'an University of Technology, China.
One best presentation will be selected from each session, evaluated from: originality; applicability; technical Merit; qualities of PPT; English. The best one will be announced at the end of each Session, and we will e-mail you after conference.
Yours sincerely, Conference Organizing Committees
3 Conference Committees
Organizing Committee Honorary Chairs Xun Hou, Xi'an Jiaotong University, China (Academician, Chinese Academy of Sciences) Hongxing Xu, Wuhan University, China (Academician, Chinese Academy of Sciences) Xuelong Li, Northwestern Polytechnical University, China (IEAS Academician)
General Chairs Perry Ping Shum, Nanyang Technology University, Singapore (OSA Fellow, SPIE Fellow) Jianlin Zhao, Northwestern Polytechnical University, China Hairong Zheng, Shaanxi Normal University. China
General Co-chair Xiaohui Li, Shaanxi Normal University, China
Techical Program Committee Chairs Qijie Wang, Nanyang Technology University, Singapore Xizheng Ke, Xi'an University of Technology, China Wenhui Fan, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China Jiamin Gong, Xi'an University of Posts and Telecommunications, China Jianqing Li, Macau University of Sience and Technology, China Nan-Kuang Chen, Liaocheng University, China Xiaoqiang Lu, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China
Local Chairs Pengfei Liang, Shaanxi Normal University, China Dong Mao, Northwestern Polytechnical University, China Lei Zhang, Xi'an Jiaotong University, China
TPC Members
Howard Lee, Baylor University and Texas A&M, USA Qizhen Sun, Huazhong University of Science and Technology, China Jianzhong Hao ,Institute for Infocomm Research, Singapore Bandar M. Alshammari, Aljouf University, Saudi Arabia Zhicai Shi, Shanghai University of Engineering Science, China Wen-Jyi Hwang, National Taiwan Normal University, Taiwan Svetlana Vasileva-Boyadzhieva, International College - Dobrich, Bulgaria Tatsuya Yamazaki, Niigata University, Japan Ali Marzoughi, The University of New South Wales, Australia Nitikarn Nimsuk, Thammasat University, Thailand Abu Bakar Ibrahim, Universiti Pendidikan Sultan Idris, Malaysia Tushar Jaware, R.C.Patel Institute of Technology, India Aashish A. Bardeka, Sipna College of Engineering & Technology, India Paulo Batista, University of Évora, Portugal Wen Qi, Donghua University, China
4 Jain-Shing Liu, Providence University, Taiwan Yanping Zhang, Gonzaga University, USA Dong Huang, Chinese Academy of Sciences, China Abhishek Kumar, Rajasthan Technical University, India Chiunhsiun Lin, National Taipei University, Taiwan Shaobo Du, Guizhou University of Commerce, China Yanwen Wang, Xijing University, China Sunqing Su, Jimei University, China Retno Wigajatri Purnamaningsih, Universitas Indonesia, Indonesia Honglin Liu, China Jiliang University, China
5 Guideline for Online Conference
Time The whole program is arranged by Beijing Time (UTC+8), please double-check your Test Time and Presentation Time, and update withyour Local Time on your own schedule, to make sure be online on time. TEST DAY:August 22-For test of some basic fuctions we would use during conference.
Tool Equipment Needs to Be Prepared ZOOM (https://zoom.com.cn/) will be used for the Please prepare a digital device with whole online event. On the buttom of the web page, Microphone(mandatory) and Webcam(optional), a you can choose download the app for free and then computer or laptop is recommended; Andmake sure choose ‘JOIN A MEETING ’, then input room’s ID. you are connected to a stable and high-quality Wi-Fi As usual you could not creat an account in China now, so you network, or 4G or Internet if available. can join in our conference as a visitor, ZOOM may ask you to input your phone number and the passwords they sent to your number to verify.
How To Use Zoom: https://support.zoom.us/hc/en-us/articles/206618765-Zoom-Video-Tutorials
Presentation Tips 1 2 1 2 3 Please prepare a computer or Please stay at a quiet place with Presentation Time: Total 15 Mins for laptop with Microphone and proper lighting, and without any every presenter, 10 Mins for enough battery and connect to a noise; This is a formal academic presentation, and 5 Mins for Q&A. stable and high-quality Wi-Fi event, please wear formal dress At first, please do a self introduction network; If not, please pre-record and behave properly. of presenter yourself, then share present video with 10mins and 5 your screen, and star the mins for Q&A. presentation. 4 5 6 One best Presentation will be For those video presentations, An English PPT must be prepared chosen from each session and you can ask the staff to help you and use English during the announced at the end of the play or play it by yourself. But presentation session. The conference secretary please stay online during your Please enter in your session’s room will email you the certificates after sessions 10 Mins earlier of the start of the conference. sessions. 7
Each Presentation will be recorded, if you don’t want it, please inform our staff ahead of time.
6 Schedule at a Glance
Beijing Time: GMT+8 August 22nd-Test 10:00-18:00 Test August 23rd-Plenary, Keynote and Invited speeches Room A : ID: 661 4324 8539 Opening Remarks: 9:00-9:05 Prof. Hairong Zheng, Dean of Graduate School, Shaanxi Normal University, China Plenary Speaker I: 9:05-9:50 Prof. Chao Lu, The Hong Kong Polytechnic University, Hong Kong Keynote Speaker I: 9:50-10:35 Prof. Xizheng Ke, Xi'an University of Technology, China 10:35-11:00 Morning Break Plenary Speaker II: 11:00-11:45 Prof. Alexey Kavokin, Westlake University, China 11:45-13:30 Lunch Break 13:30-15:30 Invited Speakers of topic: Space Communications, Navigation and Tracking Plenary Speaker III: 16:00-16:45 Prof. Kenneth Grattan FREng, City University London, UK Plenary Speaker IV: 16:45-17:30 Prof. David Payne, University of Southampton, UK August 24th-Invited Speeches Room A : ID: 661 4324 8539 Room B : ID: 613 2916 2069 Session T2: Quantum Information and Related 9:30-12:10 Session T1: Optical Communications and Networks Quantum Technologies 12:10-13:30 Lunch Break Session T3: Optical Communications, Networks and Session T4: Quantum Information and Related 13:30-15:50 Ultrafast Photonics Quantum Technologies 15:50-16:00 Afternoon Break Session T5: High Power Laser Source, Fiber-based Session T6: Quantum Information and Related 16:00-18:20 Devices and Applications Quantum Technologies August 25th-Oral Sessions Room A : ID: 661 4324 8539 Room B : ID: 613 2916 2069 10:00-11:30 Session 1: Data and Information Engineering Session 2: Intelligent Calculation and Application 11:30-14:00 Lunch Break Room A : ID: 661 4324 8539 Room B : ID: 613 2916 2069 Room C: ID: 697 6169 9793 Session 5: Space Session 3: Communication Session 4: Wireless 14:00-15:30 Communications, Navigation Principle and Technology Communication and Tracking 15:30-16:00 Lunch Break Session 7: Micro/nano-photonic Session 8: Information 16:00-17:45 Session 6: Wireless Network Device and All Optical Signal Communication and Processing Management Ps: Any questions, please contact our Wechat: 18108245450 or e-mail: icicn@ [email protected], we are always online.
7 Plenary Speaker I Prof. Chao Lu The Hong Kong Polytechnic University, Room A ID: 661 4324 8539 Hong Kong Test Time: 17:00-17:10, August 22nd Speech Time: 9:05-09:50, August 23rd Title: Optical Communication Systems: Current Status and Future Perspectives
Biography Abstract Prof. Chao LU obtained his BEng in Electronic Engineering Optical communication technologies have been developed from Tsinghua University, China in 1985, and his MSc and PhD rapidly in the past 20 years. How to further increase the from University of Manchester in 1987 and 1990 respectively. capacity and efficiency of future high capacity optical He joined the School of Electrical and Electronic Engineering, networks is the challenge facing our research community Nanyang Technological University(NTU), Singapore in 1991 now. In the talk, I will review the current development in and has been there as a Lecturer, Senior Lecturer and the area and discuss the possible future development in Associate Professor until 2006. From June 2002 to December devices, system and networks technologies. 2005, he was seconded to the Institute for Infocomm Research, Agency for Science, Technology and Research (A*STAR), Singapore, as Program Director and Department Manager leading a research group in the area of optical communication and fibre devices. He joined Department of Electronic and Information Engineering, The Hong Kong Polytechnic University as Professor in 2006 and is Chair Professor of Fibre Optics there now. Over the years, he has published more than 300 papers in major international journals and has given a number of invited talks in major international conferences. He has been organizer or technical program committee member of many international conferences. His current research interests are in the area of high capacity transmission techniques for long haul and short reach systems and distributed optical sensing systems. In addition to academic research work, he has had many industrial collaborative research projects and has a number of awarded patents. He is fellow of the Optical Society(OSA).
8 Keynote Speaker I Prof. Xizheng Ke Xi'an University of Technology, China Room A ID: 661 4324 8539
Test Time: 17:10-17:20, August 22nd Title: Experimental study on 100km free
Speech Time: 9:50-10:35, August 23rd space coherent optical communication
Biography Abstract Xizheng Ke, Ph.D., Second-level Professor, head of information Compared with the direct detection technology, the and communication system discipline of Xi'an University of coherent detection technology of free space optical Technology, deputy director of Shaanxi Provincial Key communication has a detection sensitivity of about 20 Laboratory of Intelligent Cooperative Network Military-civilian dB gain, which is more suitable for long-distance laser Joint Construction. Famous Teaching Teacher of Shaanxi communication. A free space optical communication Province, Fellow of Chinese Institute of Electronics, Director of field experiment based on heterodyne detection is built in Chinese Optical Engineering Society, Standing Director of the near ground 100 km link from erlangjian to Quanji Shaanxi Optical Society. He received his bachelor's degree from Township, Qinghai Lake. The experimental results show Shaanxi Institute of Technology in 1983 and his Ph.D. degree that the PTZ motor at the transmitting end adopts the from University of Chinese Academy of Sciences in 1996. From rectangular scanning mode, and the infrared camera at 1997 to 2002, he did post-doctoral research in Xidian University the receiving end can capture the beam and realize the and the Second Artillery Engineering Institute. He is an editorial beam alignment step by step; the adaptive optical system board member of "Journal of Electronics", "Infrared and Laser based on the combination of fast steering mirror and Engineering", "Journal of Electronic Measurement and deformable mirror can complete the wavefront Instruments", "Laser Technology", "Applied Optics", "Journal of correction, and the effect of simultaneous correction of Xi'an University of Technology", Editorial Board Member of fast steering mirror and deformable mirror is better than Journal of Time and Frequency, Editorial Board Member of that of single correction of fast steering mirror or National Science and Technology Awards Review Expert of deformable mirror; multi antenna emission junction "Journal of Atmospheric Science Research", Member of Subject compared with the single antenna transmission structure, Review Group of Shaanxi Provincial Academic Degrees the structure can effectively improve the average value Committee. He won the Outstanding Young Scholar Award of of the coupling optical power of the receiver, and the the Chinese Academy of Sciences in 2000, and he was awarded variance of the coupling power of the multi antenna the title of "Excellent Science and Technology Commissioner of transmission in the receiver is smaller than that of the Guangdong Province of the Ministry of Education of the single antenna transmission, which shows that the multi Ministry of Science and Technology" in 2009. Also, he won the antenna transmission technology can effectively suppress title of “Leader of Green Yang Jinfeng” in Yangzhou City in the light intensity flicker. 2015, the China Industry-University-Research Innovation Award in 2018, the second prize of China Industry-University-Research Innovation Achievement in 2019 and the title of "Excellent Scientific and Technological Worker of Chinese Institute of Electronics" in 2020. Since 2001, he has won 16 provincial and ministerial science and technology awards, including 1 first-class prize and 5 second-class prizes. He has obtained more than 20 national authorized invention patents, published 9 monographs in Science Press, and more than 400 academic papers in domestic and foreign journals with citation H index 26 and G index 42. Till now, more than 30 doctoral students have been cultivated under his direction.
9 Plenary Speaker II
Room A ID: 661 4324 8539 Prof. Alexey Kavokin Westlake University, China nd Test Time: 17:20-17:30, August 22 rd Speech Time: 11:00-11:45, August 23 Title: Qubits based on Split-Ring Condensates of Exciton Polaritons
Biography Abstract Professor Alexey Kavokin has received his PhD in Physics Superconducting flux qubits are based on a superposition of from the Ioffe Institute of Russian Academy of Sciences in clock-wise and anti-clockwise currents formed by millions 1993. In 1998 he has become a Professor of the Blaise of Cooper pairs. In order to excite the system in a Pascal University, Clermont-Ferrand, France. In 2005 he has superposition state, the half-quantum flux of magnetic field joined the University of Southampton, United Kingdom, as a is passed through the superconducting circuit containing one Chair of Nanophysics and Photonics. In 2018 he has moved or several Josephson junctions. The system is forced to to China where he now works as a Chair Professor and generate a circular current to either reduce the magnetic flux Director of the International Center for Polaritonics at the to zero or to build it up to a full-quantum flux. Circular Westlake university, Hangzhou. The track record of Prof. currents of exciton-polaritons mimic the superconducting Kavokin includes over 400 publications mostly devoted to flux qubits being composed by a large number of bosonic the physics of strongly coupled light-matter systems. He quasiparticles that compose a single quantum state of a authored the monographs “Cavity polaritons” (Elsevier, many-body condensate. The essential difference comes from 2003) and “Microcavities” (Oxford University Press, 2007, the fact that polaritons are electrically neutral, and the 2013). His awards include the Marie Curie Chair of magnetic field would not have a significant effect on a Excellence in Rome (2006), the Megagrant of the polariton current. We note however, that the phase of a Government of Russian Federation (2011) and the polariton condensate must change by an integer number of Established Career Fellowship of the EPSRC (United 2π, when going around the ring. If one introduces a π-phase Kingdom, 2013). Main research achievements include the delay line in the ring, the system is obliged to propagate a theory of Polariton lasing, the predictions of Optical Spin clockwise or anticlockwise circular current to reduce the Hall and Spin Meissner effect and the series of works total phase gained over one round-trip to zero or to build it toward observation of the Light Induced Superconductivity. up to 2π. We show that such a π-delay line can be provided by a dark-soliton embedded into a ring condensate and pinned to a potential well created by the C-shape non-resonant pump-spot. The physics of resulting split-ring polariton condensates is essentially similar to the physics of flux qubits. In particular, they exhibit pronounced Bloch oscillations passing periodically through clockwise and anticlockwise current states as Figure 1 shows. We argue that qubits based on split-ring polariton condensates may be characterized by a high figure of merit that makes them a valuable alternative to superconducting qubits.
10
Figure 1. The considered shape of a non-resonant pump spot (a), the oscillations of the topological charge of the resulting split-ring polariton condensate (b), snap-shots of the absolute value of the many-body wave-function of the polariton condensate (left panels), its phase (middle panels) and phase for the fixed radius (right panels) at different stages of the time evolution ((c) m=0.3, (d) m=0, (e) m=-0.3)).
11 Plenary Speaker III Prof. Kenneth Grattan FREng City University London, UK Room A ID: 661 4324 8539
Test Time: 17:30-17:40, August 22nd Title: Optical fiber sensors: better
Speech Time: 16:00-16:45, August 23rd solutions for Challenging Industrial Measurement Problems?
Biography Abstract Professor Grattan graduated in Physics from Queen's University Optical Fibre Sensors have been developed extensively Belfast with a BSc (First Class Honours) in 1974, followed by a now over some four decades – created to address a range PhD in Laser Physics. His doctoral research involved the use of of challenging industrial applications where conventional laser-probe techniques for measurements on potential new sensors often are badly conditioned for important laser systems. monitoring needs. Systems are required to enhance Following Queen's, in 1978 he became a Research Fellow at safety, to allow assets to be used for longer, to schedule Imperial College of Science and Technology, sponsored by the repair and maintenance better and to create a more cost Rutherford Laboratory to work on advanced photolytic drivers effectively and improve the working environment for us for novel laser systems. This involved detailed measurements all. As an example, the demands of electric and of the characteristics and properties of novel laser species and autonomous transport, be it on land, sea or air, as well as a range of materials involved in systems calibration. energy generation and distribution and robotics make In 1983 he joined City University London as a "new blood" enormous demands for better sensor systems. Lecturer in Physics, being appointed Professor of Measurement and Instrumentation in 1991 and Head of the Department of This talk will review the essential background to and Electrical, Electronic and Information Engineering. From 2001 history of optical fibre sensors and then look at how a to 2008 he was the Associate and then Deputy Dean of the range of optical fibre-based techniques can be applied to School of Engineering and from 2008 to 2012 the first Conjoint problems such as those highlighted and offer alternative, Dean of the School of Engineering & Mathematical Sciences and better solutions to those from current technologies be and the School of Informatics. In 2013 he was appointed the they electronic, hydraulic, electrochemical, and analogue Inaugural Dean of the City Graduate School. He was appointed or digital – revealing solutions which have the potential George Daniels Professor of Scientific Instrumentation in 2013 readily to be adopted by industry. The work will and to a Royal Academy of Engineering Research Chair in 2014. review a number of ‘case studies’, where working in His research interests have expanded to include the collaboration with industry and researchers across the development and use of fibre optic and optical systems in the world, new and practical solutions to key problems have measurement of a range of physical and chemical parameters. been found and implemented in-the-field, not just as The work has been sponsored by a number of organizations laboratory demonstrations. including EPSRC, the EU, private industry and charitable sources, and he holds several patents for instrumentation systems for monitoring in industry using optical techniques. He obtained the degree of Doctor of Science (DSc) from City University in 1992 for his sensor work. Professor Grattan is extensively involved with the work of the professional bodies having been Chairman of the Science, Education and Technology of the Institution of Electrical Engineers (now IET), the Applied Optics Division of the Institute of Physics and he was President of the Institute of Measurement and Control during the year 2000. He has served on the Councils of all three of these Professional Bodies. He was awarded the Callendar Medal of the Institute of Measurement and Control in 1992, and twice the Honeywell Prize for work published in the
12 Institute's journal as well as the Sir Harold Hartley Medal in 2012 for distinction in the field of instrumentation and control. He was awarded the Applied Optics Divisional Prize in 2010 for his work on optical sensing and the honorary degree of Doctor of the University of the University of Oradea in 2014. He was elected President of the International Measurement Confederation (IMEKO) in 2014, serving from 2015 to 2018. He was elected to the Royal Academy of Engineering, the UK National Academy of Engineering, in 2008. Professor Grattan has been Deputy Editor of the Journal Measurement Science and Technology for several years and currently serves on the Editorial Board of several major journals in his field in the USA and Europe. In January 2001 he was appointed Editor of the IMEKO Journal "Measurement" and also serves on their General Council. He is the author and co-author of over seven hundred refereed publications in major international journals and at conferences and is the co-editor (with Professor B T Meggitt) of a five volume topical series on Optical Fiber Sensor Technology. His work is highly cited by his peers nationally and internationally. He is a Visiting Professor at several major Universities in China, with strong links to Harbin Engineering University and the Shandong Academy of Sciences. Professor Grattan has been a Member of the University Executive Committee (ExCo) since 2008 and chairs two of its sub-Committees, the University Sustainability Committee and the Business Continuity Management Committee. He has served on Senate for over 20 years, as well as many of its sub-Committees.
13 Plenary Speaker IV
Prof. David Payne
Room A ID: 661 4324 8539 University of Southampton, UK
nd Test Time: 17:40-17:50, August 22 rd Title: Silica and Silicon: The ultimate photonic Speech Time: 16:45-17:30, August 23 materials
Biography Abstract Prof. Sir David Neil Payne CBE FRS FREng is Director of the The internet is perhaps the most important and Optoelectronics Research Centre at the University of life-changing invention of the 20th century. It required the Southampton UK. His work has had a great impact on invention of a new global communication medium capable telecommunications and laser technology over the last forty of carrying vast quantities of information across years. The vast transmission capacity of today’s internet trans-oceanic distances, reliably, cheaply and efficiently. results directly from the erbium-doped fibre amplifier Unpredictably, this turned out to be optical fibres made (EDFA) invented by David and his team in the 1980s. His from the two most common elements of the earth’s crust, pioneering work in fibre fabrication in the 70s resulted in silicon and oxygen (silica). almost all of the special fibres in use today including fibre As the internet traffic grows by some estimates at lasers. With US funding, he led the team that broke the 40%/annum there is constant pressure to find more fibre kilowatt barrier for fibre laser output to international capacity, although at $8/km the option remains to simply acclaim and now holds many other fibre laser performance install more fibre, rather than find better fibres. However, records. He has published over 650 Conference and Journal in many applications where duct volume, single fibre papers. As an entrepreneur David’s activities have led to a capacity, reduced transit time or better phase stability is cluster of 11 photonics spin-out companies in and around critical, there will be a role for novel advanced designs such Southampton. He founded SPI Lasers PLC, which was as hollow-core or multi-core fibres. Transit time and acquired by the Trumpf Corporation of Germany. He is an stability is becoming increasingly important for global Emeritus Chairman of the Marconi Society and a foreign timing, time-stamping for financial trading, 5G wireless member of the Russian Academy of Sciences, the Indian (where the density of masts is determined by the delay National Science Academy and the Indian Academy of between them) and autonomous vehicles. Engineering. David is a fellow of the Royal Society and the With the huge increase in data traffic comes a headache in Royal Academy of Engineering. how to store the information for the requisite period of time that is often mandated by banks and government – up to several hundred years. A new storage medium based once again on silica appears a leading contender to replace today’s tape units. The technique, known as 5D storage because of the way each bit can be written and read, provides both high storage density and the extraordinary lifetime estimated at 1020 years. The parallel field of high-power fibre lasers also relies on silica fibre. This field has seen a revolution in industrial laser processing and the market has grown to several $B/annum. Because of its robust, monolithic nature and its efficiency, the fibre laser is finding favour in defence applications as well. With its extraordinary combination of low expansion coefficient and high optical damage, silica is the unassailable material of choice for this hugely important industrial market.
14 Schedule
August 22nd, 2020
Beijing Time: GMT +8
Day 1: Test Day
10:00-11:30 Invited Speakers Test
Ning Jiang, Lixia Xi, Xianfeng Tang, Hui Yang, Chen Chen, Invites Speaker: Room A ID: 661 4324 8539 Jiangbing Du, Feng Tian, Jing Zhang, Peng Xue, Xiaojun Jia, Session T1-T2 Lijian Zhang, Zhangqi Yin, Yong Zhang, Pei Zhang
Changyuan Yu, Zhensen Gao, Lin Huang and Xueming Liu, Invites Speaker: Chun-Nien Liu, Zaidao Wen, Kan Wu, Weiqing Gao, Xiulai Xu, Room B ID: 613 2916 2069 Session T3-T4 Chunhua Dong, Jin Liu, Qing Zhang, Chaoyuan Jin, Yongheng Huo
14:00-15:00 Invited Speaker & Oral Presenters Test
Bo Guo, Jian Wu, Dapeng Zhou, Jiangming Xu, Weili Zhang, Invites Speaker: Baoquan Jin, Fuxing Gu, Qiongyi He, Jietai Jing, Qiang Zhou, Session T5-T6 Room A ID: 661 4324 8539 Zhaoyang Zhang, Ruifang Dong, Kun Huang
N098, N123, N140, 126, N146, N3002-A, Oral Session: 1-2 Room B ID: 613 2916 2069 N3003-A, N120, N121, N107, N009, N135
15:30-16:30 Oral Presenters Test
N006, N102, N122, N138, N095, N139, Oral Session: 3-4 Room A ID: 661 4324 8539 N145, N096, N097, N104, N116, N3001
N134, N108, N141, N136, N110, N111 Oral Session: 5-6 Room B ID: 613 2916 2069 N129, N105, N119, N127, N143, N117, FP2-8003
N124, N128, N133, N144, N137, N131, FP2-8010, FP2-8007, Oral Session: 7-8 ROOM C ID:697 6169 9793 FP2-8008, FP2-8009, FP2-8011, FP1-004, FP1-006, FP1-008
17:00-18:00 Keynote, Plenary & Invited Speakers Test 17:00-17:10 Plenary Speaker I: Prof. Chao Lu 17:10-17:20 Keynote Speaker I: Prof. Xizheng Ke Room A ID: 661 4324 8539 17:20-17:30 Plenary Speaker II: Prof. Alexey Kavokin 17:30-17:40 Plenary Speaker IV: Prof. Kenneth Grattan FREng 17:40-17:50 Plenary Speaker V: Prof. David Payne
Invited Speaker of topic: Space Communications, Navigation and Tracking Room B ID: 613 2916 2069 Qinghua Tian, Yi Lei, Huiqin Wang, Li Zhao, Yi Wang, Jiahao Huo
15 Schedule
August 23rd, 2020
Beijing Time: GMT +8
Day 2: Keynote, Plenary and Invited Speeches
Room A: 661 4324 8539
Chair: Prof. Xiaohui Li, Shaanxi Normal University, China 9:00-9:05 Opening Remarks Prof. Hairong Zheng, Dean of Graduate School, Shaanxi Normal University, China 9:05-9:50 Plenary Speaker I Prof. Chao Lu, The Hong Kong Polytechnic University, Hong Kong Title: Optical Communication Systems: Current Status and Future Perspectives 9:50-10:35 Keynote Speaker I Prof. Xizheng Ke, Xi'an University of Technology, China Title: Experimental study on 100km free space coherent optical communication 10:35-11:00 Morning Break Chair: Prof. Feng Li, Xi’an Jiaotong University, China 11:00-11:45 Plenary Speaker II Prof. Alexey Kavokin, Westlake University, China Title: Qubits Based on Split-Ring Condensates of Exciton Polaritons 11:45-13:30 Lunch Break Invited Speakers of topic:
Space Communications, Navigation and Tracking Chair: Prof. Tianshu Wang, Changchun University of Science and Technology, China Prof. Xizheng Ke, Xi'an University of Technology, China Qinghua Tian, Beijing University of Posts and Telecommunications, China 13:30-13:50 An overview of Machine Learning-aided Applications for free space optical communication Yi Lei, Hefei University of Technology, China 13:50-14:10 Improved Decoding of Staircase Codes via Soft-aided Bit-Marking Algorithm Huiqin Wang, Lanzhou University of Technology, China 14:10-14:30 Asymmetrically Clipped Optical OFDM with Index Modulation for Turbulent Channels Li Zhao, Xi’an Technological University, China 14:30-14:50 The layout of VLC light source for both lighting and communication reliability Yi Wang, China Jiliang University, China 14:50-15:10 Average Bit Error Rate Analysis of Multi-hop Free Space Optical Spatial Modulation System over Malaga Fading Channels Jiahao Huo, University of Science & Technology Beijing, China 15:10-15:30 Theoretical Analysis of PD Thermal Noise for PDM-IM Signals by using Different SVRs 15:30-16:00 Afternoon Break Chair: Prof. Nan-Kuang Chen, Liaocheng University, China 16:00-16:45 Plenary Speaker III Prof. Kenneth Grattan FREng, City University London, UK Title: Optical fiber sensors: better solutions for Challenging Industrial Measurement Problems? 16:45-17:30 Plenary Speaker IV Prof. David Payne, University of Southampton, UK Title: Silica and Silicon: The ultimate photonic materials
16 Schedule
August 24th, 2020
Beijing Time: GMT +8
Day 3: Invited Speeches
Morning: 9:30-12:10 Session T1: Optical Communications and Networks Chair: Prof. Jianping Li, Guangdong University of Technology, China Ning Jiang, University of Electronic Science and Technology of China, China 9:30-9:50 Secure WDM Optical Communication Based on Private Chaotic Spectral Phase Encryption Lixia Xi, Beijing University of Posts and Telecommunications, China 9:50-10:10 An Overview on Fiber-Optic transmission system based Nonlinear Frequency Division Multiplexing Chen Chen, Chongqing University, China 10:10-10:30 MIMO Visible Light Communication: A User-Centric Perspective Hui Yang, Beijing University of Posts and Telecommunications, China 10:30-10:50 Room A: Edge Intelligent-oriented Optical Network and Control ID: 661 4324 8539 Jiangbing Du, Shanghai Jiao Tong University, China 10:50-11:10 Machine learning aided inverse design of optical fiber link for improved mode-division-multiplexing Xianfeng Tang, Beijing University of Posts and Telecommunications, China 11:10-11:30 Physical Layer Encryption of CO-OFDM System Based on Cellular Automata and DNA Encoding Feng Tian, Beijing University of Posts and Telecommunications, China 11:30-11:50 A 3-Dimensional Adaptive Hierarchical QAM Scheme for Elastic Optical Network Jing Zhang, University of Electronic Science and Technology of China, China 11:50-12:10 The Cascaded Neural Network for MFI and OSNR monitoring
Session T2: Quantum Information and Related Quantum Technologies Chair: Prof. Yin Cai, Xi’an Jiaotong University, China Keynote Peng Xue, Beijing Computational Science Research Center, China 9:30-10:00 Speaker Parity-time-symmetric quantum walks Keynote Xiaojun Jia, Shanxi University, China 10:00-10:30 Speaker Continuous Variable quantum teleportation through fiber-channel Lijian Zhang, Nanjing University, China 10:30-10:50 Room B: High-dimensional quantum states: generation and characterization ID: 613 2916 2069 Zhangqi Yin, Beijing Institute of Technology, China 10:50-11:10 Quantum Information processing with levitated nanodiamonds Yong Zhang, Nanjing University, China 11:10-11:30 Nonlinear multiplexing holography in nonlinear photonic crystal Pei Zhang, Xi'an Jiaotong University, China 11:30-11:50 Mode sorter with astigmatic Gouy phase
12:10-13:30 Lunch Break
17 Schedule
August 24th, 2020
Beijing Time: GMT +8
Day 3: Invited Speeches
Afternoon: 13:30-15:50 Session T3: Optical Communications, Networks and Ultrafast Photonics Chair: Prof. Tianye Huang, China University of Geosciences, China Changyuan Yu, The Hong Kong Polytechnic University, Hongkong 13:30-13:50 Indoor Visible Light Communication Systems with Dimming Control Zhensen Gao, Guangdong University of Technology, China 13:50-14:10 Chaotic optical communication: recent progresses and challenges Lin Huang, Zhejiang University, China 14:10-14:30 Xueming Liu, Nanjing University of Aeronautics and Astronautics, China Real time characterization of buildup dynamics of solitons in ultrafast fiber lasers Chun-Nien Liu, National Chung Hsing University, Taiwan Room A: 14:30-14:50 Simulation and Package of Si-Photonics Transceiver Module for High Speed Data ID: 661 4324 8539 Center and Cloud Network Zaidao Wen, Northwestern Polytechnical University, China 14:50-15:10 Intelligent synthetic aperture radar target perception and recognition: from automatic to autonomous Kan Wu, Shanghai Jiaotong University, China 15:10-15:30 Integrated beam steering devices and lidar Weiqing Gao, Hefei University of Technology, China 15:30-15:50 Passively mode-locked fiber laser at 1.95 µm waveband using saturable absorber based on SnSe nanoparticles
Session T4: Quantum Information and Related Quantum Technologies Chair: Prof. Feng Li, Xi’an Jiaotong University, China Keynote Xiulai Xu, Institute of Physics, CAS, China 13:30-14:00 Purcell effect and lasing from quantum dots in a topological photonic Speaker crystal nanocavity Chunhua Dong, University of Science and Technology of China, China 14:00-14:20 Non-reciprocity in a multi-mode optomechanical microresonator Jin Liu, Sun Yat-sen University, China 14:20-14:40 High-Q bound States in the continuum based on all dielectric metasurfaces Room B: Qing Zhang, Peking University, China ID: 613 2916 2069 14:40-15:00 Exciton Polariton and Micro/nano-Lasing of Lead-Halide Perovskite Semiconductors Chaoyuan Jin, Zhejiang University, China 15:00-15:20 In-situ Laser Interference for Nano-material Growth and Microcavity Photonic Devices Yongheng Huo, University of Science and Technology of China 15:20-15:40 High-performance Single & Entangled Photon Sources using MBE Grown III/V Semiconductor Quantum Dots
15:50-16:00 Afternoon Break
18 Schedule
August 24th, 2020
Beijing Time: GMT +8
Day 3: Invited Speeches
Afternoon: 16:00-18:20 Session T5: High Power Laser Source, Fiber-based Devices and Applications Chair: Prof. Zinan Wang, University of Electronic Science and Technology of China, China Bo Guo, Harbin Engineering University, China 16:00-16:20 Advances in 2D materials-based multi-wavelength ultrafast photonics Jian Wu, National University of Defense Technology, China 16:20-16:40 Yb-doped fiber laser with Black phosphorus: versatility in spatial/temporal domain Dapeng Zhou, Dalian University of Technology, China 16:40-17:00 Computational Brillouin Optical Time-Domain Analysis via Compressed Sensing and Ghost Imaging Room A: Jiangming Xu, National University of Defense Technology, China ID: 661 4324 8539 17:00-17:20 Novel pump source enabled performance exploration of high power random fiber laser Weili Zhang, University of Electronic Science and Technology of China, China 17:20-17:40 Control and imaging application of fiber random lasers Baoquan Jin, Taiyuan University of Technology, China 17:40-18:00 Parallel Signal Processing for Distributed Optical Fiber Sensors Fuxing Gu, University of Shanghai for Science and Technology, China 18:00-18:20 Semiconductor monolayers on optical micro/nanofibers for low threshold lasing
Session T6: Quantum Information and Related Quantum Technologies Chair: Prof. Yin Cai, Xi’an Jiaotong University, China Qiongyi He, Peking University, China 16:00-16:20 Versatile Multipartite Einstein-Podolsky-Rosen Steering via a Quantum Frequency Comb Jietai Jing, East China Normal University, China 16:20-16:40 Quantum Light Source based on Atomic Ensemble Qiang Zhou, University of Electronic Science and Technology of China, China 16:40-17:00 Towards a High-Performance Teleportation System for Quantum Internet Room B: Zhaoyang Zhang, Xi'an Jiaotong University, China ID: 613 2916 2069 17:00-17:20 Coherent control on novel dynamic behaviors of light in electromagnetically induced photonic lattices Ruifang Dong, National Time Service Center, CAS, China 17:20-17:40 Nonlocal dispersion cancellation characterization of frequency entanglement and its application in nonlocality test Kun Huang, East China Normal University, China 17:40-18:00 Mid-infrared photon-number-resolving detection based on frequency upconversion
19 Schedule
August 25th, 2020
Beijing Time: GMT +8
Day 4: Oral Sessions
Room A ID: 661 4324 8539 Session 1: Data and Information Engineering Chair: Prof. Bao Ge, Shaanxi Normal University, China Research on Computer Aided Detection and Segmentation of Pulmonary Nodules Based on Deep Learning and Generative Adversarial Networks 10:00-10:15 N098 Ziming Wang, Jingxiang Sun, Siyi Yang and Yuzhuo Cheng Northeastern University, China Sparse Support Vector Machine for Network Behavior Anomaly Detection
10:15-10:30 N123 Mengxue Deng, Xinrong Wu, Peilun Feng and Weijun Zeng Army Engineering University of PLA, China Oil Field Crude Oil Production Level Prediction Method Based on AHP-PSO-BP
10:30-10:45 N140 Hongtao Hu, Yingzi Pu and Xin Guan Xi’an Shiyou University, China Cooperative Cache Placement Algorithm for Arbitrary Topology in ICN Based on Particle Swarm Optimization 10:45-11:00 N126 Siyang Shan, Chunyan Feng and Tiankui Zhang Beijing University of Posts and Telecommunications, China Research on Information Security of Large Enterprises
11:00-11:15 N146 Jia Liu SDIC Intelligence Co.,Ltd., China Real-time Alert Project Based on Express Delivery Big Data N3002-A 11:15-11:30 Qien Li Chengdu Cisiondata Co., Ltd, China
Room B ID: 613 2916 2069 Session 2: Intelligent Calculation and Application Chair: Prof. Xiaoping Lu, Macau University of Science and Technology, Macau Multiple object tracking based on convolutional neural networks
10:00-10:15 N3003-A Chi Zhicheng, Li Dongshen and Liu Han Chang'an University, China Patent management evaluation of tobacco enterprises based on Grey Relational Analysis and Efficacy Coefficient Method
10:15-10:30 N120 Xiaojuan Wang and Hong Zhang China Tobacco Guizhou Industrial CO.,LTD, China
20 Research on risk assessment technology of power monitoring system based on machine learning 10:30-10:45 N121 Bo Li, Ye Liang, Hao Wang, Zhengwei Jiang and Xueqi Jin Beijing Kedong Electric Power Control System Co., Ltd., China Giant enhancement of forward stimulated Brillouin scattering in surface plasmon polaritons waveguide 10:45-11:00 N107 Yuan Xie, Tianye Huang and Perry Shum Ping China University of Geosciences (Wuhan), China A Service Composition Optimization Model Based on Petri Nets and Service Contracts
11:00-11:15 N009 Zhou Fang, Chao Ma, Jiaxing Qu, Xue Song and Chi Zhang Heilongjiang Province Cyberspace Research Center, China Micro-grid oriented active demand response optimization scheme
11:15-11:30 N135 Anqin Luo, Jianan Yuan, Chao Huo and Yue Liu Beijing SmartChip Microelectronics Technology Company Limited, China
11:30-14:00 Lunch Break
Room A ID: 661 4324 8539 Session 3: Communication Principle and Technology Chair: Prof. Liang Wang, Shaanxi Normal University, China Antenna Selection for Non-Orthogonal Multiple Access with Space Time Block Codes
14:00-14:15 N006 Guowei Lei and Sunqing Su Jimei University, China An Adaptive Power Allocation and Coding Scheme for Improving Achievable Rate of the Gaussian Interference Channel 14:15-14:30 N102 Zhonglong Wang, Liyuan Zhang and Meng Ma Peking University, China Resource Allocation in OFDMA Networks with Deep Reinforcement Learning
14:30-14:45 N122 Jiaxin Liu, Xiao Ma, Weijia Han and Liang Wang Shaanxi Normal University, China Uplink Cooperative NOMA Scheme with Higher Spectral Efficiency
14:45-15:00 N095 Yunxiao Sun, Yan Li, Xiang Wang, Yajuan Guo and Daohua Zhu State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, China Robust Resource Division Multiplexing in Highly Time-varying Channels
15:00-15:15 N138 Weijia Han, Xiao Ma, Chen Li and Di Tang Shaanxi Normal University, China A New Refined Lyapunov Functional for Time-varying Delayed Systems
15:15-15:30 N139 Can Zhao, Daixi Liao, Xinzhi Liu, Qishui Zhong, Shouming Zhong and Kaibo Shi University of Electronic Science and Technology of China, China
21 Room B ID: 613 2916 2069 Session 4: Wireless Communication Chair: Prof. Junhui Zhao, East China Jiaotong University, China (IET Fellow) Optical Access network for a SMART Niamey
14:00-14:15 N145 Djibo Boubacar Issoufou, Ahmed Kora, Djibo Boubacar Issoufou and Samuel Ouya Laboratoire e-Inov DSTN ESMT/ESP/UCAD, Ecole Sup. Multinationale Télécom, Senegal WLAN Fingerprint Localization with Stable Access Point Selection and Deep LSTM
14:15-14:30 N096 Xinyu Shi, Jing Guo and Zesong Fei Beijing Institute of Technology, China Distributed mmWave Massive MIMO: a Performance Comparison with a Centralized Architecture for Various Degrees of Hybridization 14:30-14:45 N104 Yu Zhao, Ignas G.Niemegeers and Sonia Heemstra De Groot Eindhoven University of Technology Eindhoven, The Netherlands Artificial Noise Projection Matrix Optimization Method for Secure Multi-cast Wireless Communication 14:45-15:00 N097 Jianbang Gao, Zhaohui Yuan and Bin Qiu Northwestern Polytechnical University, China New Pilot Signal Design on Compressive Sensing Based Random Access for Machine Type Communication 15:00-15:15 N116 Ma Jing, Erzhong Xue and Dong Xueli Xidian University, China Effect of Synchronization Deviation on The Performance of PSWFs Non-sinusoidal Communication System 15:15-15:30 N3001 Chuan-Hui Liu, Da-Wei Yang, Fa-Ping Lu and Jia-Fang Kang Naval Aviation University, China
Room C ID: 697 6169 9793 Session 5: Space Communications, Navigation and Tracking Chair: Assoc.Prof. Chunfeng Wang, China Academy of Space Technology, China Prof. Mingjun Wang, Xi'an University of Technology, China Aerial Image Stitching via Transformation Space Filtering
14:00-14:15 N134 Hao Wang, Zhengyan Ding and Zhiguo Yan Third Research Institute of Ministry of Public Security, China A Bayesian Probabilistic AOA Localization Algorithm
14:15-14:30 N108 Zhenyu Zhang, Shaoli Kang and Xiang Zhang Beihang University, China Improved DV-Hop Based on Dynamic Parameters Differential Evolution Localization Algorithm 14:30-14:45 N141 Qiang Li, Xia Huang, Yuhang Xu and Dan Zhao Lanzhou Jiaotong University, China Detecting Malicious TLS Network Traffic Based on Communication Channel Features
14:45-15:00 N110 Rongfeng Zheng, Jiayong Liu, Kai Li, Shan Liao and Liang Liu Sichuan University, China
22 Allocation of available link resources based on the number of aircraft in different airspaces 15:00-15:15 N136 Dongli Wang, Qilu Sun, Yequn Wang, Xiaohongyi Han and Hui Zhong Air Force Engineering University, China Research on routing control with delay constraint based on contact plan for integrated satellite-terrestrial network 15:15-15:30 N111 Hao Zhang and Chunfeng Wang China Academy of Space Technology, China
15:30-16:00 Afternoon Break
Room A ID: 661 4324 8539 Session 6: Wireless Network Chair: Prof. Qinglin Zhao, Macau University of Science and Technology, China Triple-Handshake-Based Semi-Blind Beamforming in mmWave Massive MIMO 16:00-16:15 N129 Ziyao Hong, Ting Li and Fei Li Nanjing University of Post & Telecommunication, China A Secure routing scheme based on probability prediction for wireless sensor networks 16:15-16:30 N105 Di Tang, You Yu, Jian Gu, Yuanyuan Yang, Weijia Han and Xiao Ma The Third Research Institute of the Ministry of Public Security, China Research and Implement of Just-In-Time Dual Buffer-Queues in LoRaWAN Gateways 16:30-16:45 N119 Jia Wang and Pan-Guo Fan Northwestern Polytechnical University, China Modeling and Performance Analysis of LTE Coexisting with Wi-Fi 16:45-17:00 N127 Zichao Qin, Aijing Li and Hai Wang The Army Engineering University of PLA, China EE-TAR: Energy Efficient and Thermal Aware Routing Protocol for Software Defined Wireless Body Area Networks 17:00-17:15 N143 Adeel Ahmed, Xingfu Wang, Ammar Hawbani, Muhammad Umar Farooq, Taiyaba Qureshi and Shamsher Ullah University of Science and Technology of China, China A Knowledge Reasoning Algorithm Based on Network Structure and Representation Learning 17:15-17:30 N117 Jinkui Yao and Yulong Zhao Jiangnan Institute of Computing Technology, China A method of real-time service quality evaluation based on customer behavior 17:30-17:45 FP2-8003 Yinchao Cheng, Qifang Xie and Zichun Zhang China Mobile Research Institute, Department of User and Market Research, China
Room B ID: 613 2916 2069 Session 7: Micro/nano-photonic Device and All Optical Signal Processing Chair: Prof. Zhanqiang Hui, Xi'an University of Posts and Telecommunications, China Study on Non-coherent Detection of DP-QPSK Signal Based on Delay-Line-Interferometer
16:00-16:15 N124 Huiwen Yin and Zhiping Huang National University of Defense Technology, China
23 Ring Resonator Structure for An Add-drop Filter Application
16:15-16:30 N128 Muhammad Raditya Gumelar and Retno Wigajatri Purnamaningsih Universitas Indonesia, Indonesia DOA estimation for nested array from reusing redundant virtual array elements viewpoint
16:30-16:45 N133 Chenghong Zhan, Guoping Hu, Zixin Zhang, Yule Zhang and Shijie Yue Air Force Engineering University, Xi’an, China Research on Anti-jamming Algorithm of BDS Signal in WiFi6 Environment
16:45-17:00 N144 Qiliang Chen, Jiahong Liang, Fan Zhang and Bo Bi Beijing Microelectronics Technology Institute, China A Low-complexity Hybrid Iterative Signal Detection Algorithm for Large-scale MIMO
17:00-17:15 N137 Dan Zhao, Dong Shen, Xiaofang Cao and Xia Huang Lanzhou Jiaotong University, China A feature-based automatic LED part locating method and the inspection of welding quality of LED chips 17:15-17:30 N131 Zili Chen and Honglin Liu China Jiliang University, China Traffic modelling for IoT networks: A survey
17:30-17:45 FP2-8010 Yufei Li and Wanqing Tu The University of Auckland, Auckland, New Zealand
Room C ID: 697 6169 9793 Session 8: Information Communication and Management Chair: Dr.Pranav Nerurkar, NMIMS University, India A machine learning approach for predicting antibody properties
16:00-16:15 FP2-8007 Oche A Egaji, Seamus Ballard-smith, Ikram Asghar and Mark Griffiths University of South Wales, Pontypridd, United Kingdom Detecting illicit entities in Bitcoin using supervised learning of ensemble decision trees
16:15-16:30 FP2-8008 Pranav Nerurkar, Yann Busnel, Romaric Ludinard, Fabien Autrel, Kunjal Shah, Madhav Chandane, Sunil Bhirud and Dhiren Patel NMIMS University Mumbai, Maharashtra A smart transportation management system for managing travel events
16:30-16:45 FP2-8009 Ikram Asghar, James Cosgrove, William Warren, Oche Alexander Egaji, Mark Griffiths, and Shelly Barratt University of South Wales, Pontypridd, United Kingdom Designing IT service management at Indonesia Internet Domain Names Registry Association’s helpdesk function 16:45-17:00 FP2-8011 Evelyn Sevina Hermita, Yudho Giri Sucahyo and Arfive Gandhi Universitas Indonesia, Depok, Indonesia Constructing a learning style model in an adaptive learning system
17:00-17:15 FP1-004 GAO Huzi and YIN Guocai North China Institute of Aerospace Engineering, China
24 The space of human interaction as the basis for modeling multilingualism and minimizing the studied languages 17:15-17:30 FP1-006 Bulatbayeva Kulzhanat Nurymzhanovna and Duisekova Kulyash Kerimbekovna L.N.Gumilyov Eurasian National University, Kazakhstan Tablet computer truly help students to master mathematical knowledge?
17:30-17:45 FP1-008 Xintong Yang Northeastern University at Qinhuangdao, China
25 Invited Speeches in Details
August 23rd GMT+8 Invited Speakers of topic: Space Communications, Navigation and Tracking Room A ID: 661 4324 8539 Chair: Prof. Tianshu Wang, Changchun University of Science and Technology, China Prof. Xizheng Ke, Xi'an University of Technology, China
13:30-13:50 Qinghua Tian, Beijing University of Posts and Telecommunications, China
Title: An overview of Machine Learning-aided Applications for free space optical communication
Biography: Qinghua Tian received the PhD degree in electromagnetic field and microwave technology from Beijing University of Posts and Telecommunication (BUPT), Beijing, China, in 2013. She is currently the associate professor at BUPT and the member of the State Key Laboratory of Information Photonics and Optical Communications and key member of Beijing Key Laboratory of Space-ground Interconnection and Convergence in BUPT. Her current research interests focus on deep learning and optical communication and satellite communication. She has authored and co-authored more than 50 international journals and peer-reviewed conference papers.
Abstract: Compared with radio frequency wireless communication, Free Space Optical (FSO) communication has a larger capacity and greater flexibility and can satisfy the increasing demand for data capacity improvement. FSO communication can quickly establish communication links in harsh environments. It is a promising communication method to satisfy the increasing needs of the intelligent and digitalization of modern information technology. However, atmospheric turbulence affects the performance of space optical communication, which is the main factor of the decline of communication performance. A large number of studies have been carried out to reduce the impact of atmospheric turbulence and improve transmission performance. However, there are still some difficulties in solving some problems with traditional methods. Fortunately, the emergence of Artificial intelligence (AI), especially Machine Learning (ML), has given many good ways to solve these problems. In this report, the applications for the combination between ML and FSO communication are reviewed and some of the challenges in these applications are discussed.
References [1] Rabinovich W S, Moore C I, Mahon R, et al. Free-space optical communications research and demonstrations at the US Naval Research Laboratory[J]. Applied Optics, 2015, 54(31): F189-F200. [2] Irwan R, Lane R G. Analysis of optimal centroid estimation applied to Shack–Hartmann sensing[J]. Applied optics, 1999, 38(32): 6737-6743. [3] Barrett T K, Sandler D G. Artificial neural network for the determination of Hubble Space Telescope aberration from stellar images[J]. Applied optics, 1993, 32(10): 1720-1727. [4] Paine S W, Fienup J R. Machine learning for improved image-based wavefront sensing[J]. Optics letters, 2018, 43(6): 1235-1238. [5] Gonsalves R A. Phase retrieval and diversity in adaptive optics[J]. Optical Engineering, 1982, 21(5): 215829. [6] Paxman R G, Schulz T J, Fienup J R. Joint estimation of object and aberrations by using phase diversity[J]. JOSA A, 1992, 9(7): 1072-1085. [7] Brady G R, Guizar-Sicairos M, Fienup J R. Optical wavefront measurement using phase retrieval with transverse translation diversity[J]. Optics express, 2009, 17(2): 624-639. [8] Tian Q, Lu C, Liu B, et al. DNN-based aberration correction in a wavefront sensorless adaptive optics system[J]. Optics
26 express, 2019, 27(8): 10765-10776. [9] Nishizaki Y, Valdivia M, Horisaki R, et al. Deep learning wavefront sensing[J]. Optics express, 2019, 27(1): 240-251. [10] Guo H, Xu Y, Li Q, et al. Improved Machine Learning Approach for Wavefront Sensing[J]. Sensors, 2019, 19(16): 3533. [11] Chen M, Jin X, Xu Z. Investigation of Convolution Neural Network-Based Wavefront Correction for FSO Systems[C]//2019 11th International Conference on Wireless Communications and Signal Processing (WCSP). IEEE, 2019: 1-6. [12] Khalighi M A, Schwartz N, Aitamer N, et al. Fading reduction by aperture averaging and spatial diversity in optical wireless systems[J]. IEEE/OSA Journal of Optical Communications and Networking, 2009, 1(6): 580-593. [13] Guo H, Korablinova N, Ren Q, et al. Wavefront reconstruction with artificial neural networks[J]. Optics express, 2006, 14(14): 6456-6462. [14] Hu K, Xu Z X, Yang W, et al. Build the structure of WFSless AO system through deep reinforcement learning[J]. IEEE Photonics Technology Letters, 2018, 30(23): 2033-2036. [15] Tian Q, Li Z, Hu K, et al. Turbo-coded 16-ary OAM shift keying FSO communication system combining the CNN-based adaptive demodulator[J]. Optics express, 2018, 26(21): 27849-27864. [16] Li Z, Tian Q, Zhang Q, et al. An improvement on the CNN-based OAM Demodulator via Conditional Generative Adversarial Networks [C]. ICOCN, 2019. *17+ S. R. Park, L. Cattell, J. M. Nichols, A. Watnik, T. Doster, and G. K. Rohde, “De-multiplexing vortex modes in optical communications using transport-based pattern recognition,” Opt. Express 26(4), 4004–4022 (2018).
13:50-14:10 Yi Lei, Hefei University of Technology, China
Title: Improved Decoding of Staircase Codes via Soft-aided Bit-Marking Algorithm
Biography: Yi Lei was born in Chongqing, China. She received the B.E. degree in electronic information and technology program from Beijing Forestry University (BJFU), Beijing, China, in 2013, and the Ph.D. degree in electronic science and technology from Beijing University of Posts and Telecommunications (BUPT), Beijing, China, in 2019. Funded by the China Scholarship Council (CSC), she held a visiting Ph.D. position at Signal Processing Systems (SPS) Group, Department of Electrical Engineering, Eindhoven University of Technology (TU/e), Eindhoven, The Netherlands, from 2017 to 2018. Since August 2018, she has been a Guest Researcher with TU/e. Since March 2019, she has also been a Lecture with the Hefei University of Technology. Her current research interests include optical communication systems, fiber-wireless integration, MIMO, channel coding, and signal processing.
Abstract: Staircase code (SCC) is a popular family of hard-decision forward error correction codes that gives large coding gain. In this talk, we will review our recent works on SCCs, in particular the proposed soft-aided bit-marking (SABM) algorithm. SABM is based on the idea of marking highly reliable bits and highly unreliable bits by partially using soft information from the channel. These marked bits are used to improve the decoding of SCCs by reducing the effect of miscorrections and extending the error-correcting capability of the component codes. For SCCs with 2-error-correcting capability BCH component codes, SABM enables additional gains of up to 0.3 dB when compared to standard decoding for SCCs. This has been experimentally demonstrated as well in an optical communication systems. The main feature of SABM is its low complexity as it only requires to slightly modify the decoding structure of standard SCCs and store very small part of the soft bits. The extension of SABM (with minor modifications) to product codes is also investigated.
References *1+ Y. Lei, B. Chen, G. Liga, X. Deng, Z. Cao, J. Li, K. Xu, A. Alvarado, “Improved Decoding of Staircase Codes: The Soft-aided Bit-marking (SABM) Algorithm,” IEEE Transactions on Communications, vol. 67, no. 12, pp. 8220-8232, 2019. *2+ Y. Lei, A. Alvarado, B. Chen, X. Deng, Z. Cao, J. Li, K. Xu, “Decoding staircase codes with marked bits,” International Symposium on Turbo Codes & Iterative Information Processing (ISTC), Hong Kong, China, 2018. [3] Y. Lei, B. Chen, A. Alvarado, “Improved BER performance of hard-decision staircase code via geometric shaping,”
27 Symposium on Information Theory and Signal Processing in The Benelux (SITB), Twente, The Netherlands, 2018. [4] B. Chen, Y. Lei, S. van der Heide, J. van Weerdenburg, A. Alvarado, C. Okonkwo, “First Experimental Verification of Improved Decoding of Staircase Codes using Marked Bits,” Optical Fiber Communications Conference (OFC), 2019. *5+ A. Alvarado, Y. Lei, D. S. Millar, “Achievable Information Rate Losses for High Order Modulation and Hard-Decision Forward Error Correction,” 44th European Conference On Optical Communication(ECOC), Roma, Italy, 2018. *6+ B. Chen, Y. Lei, D. Lavery, C. Okonkwo, A. Alvarado, “Rate-Adaptive Coded Modulation with Geometrically-shaped Constellations,” Asia Communications and Photonics Conference (ACP), Hangzhou, China, 2018. [7] A. Alvarado, G. Liga, Y. Lei, B. Chen, A. Balatsoukas-Stimming, “Improving HD-FEC Decoding via Bit Marking,” Opto-Electronics and Communications Conference (OECC) and International Conference on Photonics in Switching and Computing (PSC), Fukuoka, Japan, July 2019.
14:10-14:30 Huiqin Wang, Lanzhou University of Technology, China
Title: Asymmetrically Clipped Optical OFDM with Index Modulation for Turbulent Channels
Biography: Wang Huiqin is currently professor and doctoral supervisor at Lanzhou University of technology. She is a senior member of the Chinese Optical Society and Gansu Institute of Electronics. She is also the director of the provincial excellent course on Communication Principles. She received her bachelor's degree from Lanzhou Jiaotong University in 1996 and the PhD degree from Xi'an University of Technology in 2011. Presided over/participated in the completion of more than 20 projects, including national Natural Science Foundation of China, Army 863 project, provincial and ministerial level scientific research project. She is the recipient of 7 science and technology awards, include 1 third level provincial award, 5 first level departmental awards and 1 second level departmental award. In recent years, she has obtained 5 invention patent authorization, 6 utility model patents authorization and 6 software copyrights. She has published over 60 academic papers in Optics and Laser Technology, Optical Engineering, China Science and other well-known academic journals. She published a textbook named "Computer Communication Technology".
Abstract: Asymmetrically Clipped Optical OFDM (ACO-OFDM) has the disadvantages of high peak-to average power ratio (PAPR) and low energy efficiency (EE) that has been limited its application in wireless optical communications (WOCs). In this paper, we present a novel ACO-OFDM method called Asymmetrically Clipped Optical OFDM with Index Modulation (ACO-OFDM-IM) for WOCs. ACO-OFDM-IM adds space dimension to convey more extra information by employing the subcarrier-index. By applying such way, the spectral efficiency (SE) and EE can be improved. In addition, the asymptotic average bit error probability (ABEP) under turbulent channel of the proposal is derived. The results show that ACO-OFDM-IM has better performance than ACO-OFDM. For example, the (8,2) ACO-OFDM-IM scheme can achieve approximately 2dB SNR gain than ACO-OFDM with the same SE and BER. Moreover, the data rates can be significantly enhanced compared with ACO-OFDM.
References [1] Z. Ghassemlooy and W. O. Popoola. Terrestrial free space optical communication. Mobile and Wireless Commun.: Network Layer and Circuit Level Design. Rijeka, Croatia: Intech, 2010, pp. 355–391. [2] Majumdar, Arun k. and Jennifer C. Ricklin, ends. Free-space Laser communications principles and advances[M]. Springer Science & Business Media 2010, (2): 5-6 [3] YIN Hang，LIU Zhi. Performance Analysis of Atmospheric Laser Communication System Based on OFDM Under Weak Turbulence Environment. Journal of Changchun University of Science and Technolog.Vol.38 No.3 Jun.2015 [4] Ranjha B and Kavehrad M.Hybrid asymmetrically clipped OFDM-based IM/DD optical wiress system[J]. Journal of Optical Communications and Networking 2014;6(4),pp:387-396. *5+ Ertuğrul Başar, Ümit Aygölü, Erdal Panay ırcı,Fellow, Orthogonal Frequency Division MultiplexingWith Index Modulation[J].IEEE Transactions on signal processing, 2013, 61 (22): 5536-5549. [6] Basar E, Panayirci E. Optical OFDM with index modulation for visible light communications. In: Proc.IEEE Int. Works hop
28 son Opt. Wirel. Commun. ; Sep. 2015;Istanbul,Turkey. pp. 11–15. [7] Basar E , Panayirci E , Uysal M , et al. Generalized LED index modulation optical OFDM for MIMO visible light communications systems[C]. International Conference on Communications. IEEE .2016,pp:1-5. [8] Mao T, Jiang R, and Bai R. Optical dual-mode index modulation aided OFDM for visible light communications. Optics Communications. 2017;,391:37–41. [9] Qi Wang, Tianqi Mao and Zhao cheng Wang, Index Modulation-Aided OFDM for Visible Light Communications, 2017. [10] Hany S. Hussein. Optical polar based MIMO-OFDM with fully generalised index-spatial LED modulation. IET Communications. 14(2) 2020, pp:282-289 [11] Yusuf Acar, Todor Cooklev. High performance OFDM with index modulation. Physical Communication(32) 2019, 192-199 *12+ Shuping Dang, Basem Shihada. Toward Spectral and Energy Efficient 5G Networks Using Relayed OFDM with Index Modulation. Arp, 2019. IEEE [13] Ruofan Luo, Hongwei Chen. PAPR reduction of the power efficient asymmetrically clipped-OFDM[C].14th International Conference on Optical Communications and Networks (ICOCN), 2015: 1-3. [14] JUN LI, YUYANG PENG. Enhanced Index Modulated OFDM Spread Spectrum. IEEE Access. 11.16. 2018.
14:30-14:50 Li Zhao, Xi’an Technological University, China
Title: The layout of VLC light source for both lighting and communication reliability
Biography: Professor Li Zhao graduated from Xi'an University of technology in 2009 with a doctor's degree. In the same year, she joined Xi'an technology University to teach. The main research directions are: optical channel characteristics, channel coding, modulation technology, signal processing in free space optical communication system; light source layout, modulation technology, indoor positioning in visible light communication system. As the project leader, she has undertaken more than 10 scientific research projects in the field of optical communication. As a main participant, she has participated in many scientific research projects. She has obtained 2 national invention patents, 1 national utility model patent and 2 software registration rights. She has published more than 30 papers in the field of optical communication; relevant research achievements have won a number of Shaanxi Provincial science and technology awards.
Abstract: In the visible light communication (VLC) system, the light emitting diode(LED) has a double function of illumination and communication. In order to take the illumination uniformity and the communication reliability into consideration, this paper takes the 4m*4m*3m room size as the model and uses the illumination compensation technology in the common indoor light source layout model to optimize the layout. It is concluded a kind of light source composed of five LED arrays layout mode. Under this kind of layout, the power consumption of the system can be reduced, at the same time the uniformity of illumination can be improved. In order to balance the reliability of VLC system, we used indoor illumination standard deviation and average BER of receiving plane in communication system to build a system optimization model function f(L,i).When the function (L,i) reaches the minimum value, it can ensure the requirement of the receiving plane illumination and the BER of communication. Finally, the simulation results show that the function f(L,i) takes the minimum value when L=0.4m and i=0.01m.At the same time, the standard deviation of the system illumination is 20.1 and power consumption is 146W and the BER is 5.07x10-7.The results show that the system can take the uniformity of indoor illumination distribution and the reliability of communication into account, which provides an optimization method for the layout of indoor VLC.
14:50-15:10 Yi Wang, China Jiliang University, China
Title: Average Bit Error Rate Analysis of Multi-hop Free Space Optical Spatial Modulation System over Malaga Fading Channels
29 Biography: Yi Wang received her PhD from Harbin Engineering University, Harbin, China. Currently, she is a professor at China JiLiang University. Her research interests include free-space optical communication, laser beam propagation in atmospheric turbulence, and optical coherent detection.
Abstract: Free-space optical (FSO) communication has attracted a growing attention for a large number of applications with its appealing advantages. These advantages include higher data rates, high security, cost-effectiveness, broadband access and license-free spectrum. However, atmospheric turbulence caused by random fluctuations in the atmosphere, pointing errors caused by beam vibration between the transmitter and receiver, and path loss due to absorption and scattering of particles will significantly impair the performance and availability of FSO system. As an effective method to overcome these disadvantages, relay transmission has received more and more attention recently. Among them, serial relaying (i.e., multi-hop transmission) can expand the coverage of limited power transmitters, improve system reliability, and has a wide range of application prospects. In addition, spatial modulation (SM) has been proposed as a novel and promising multiple input multiple output (MIMO) technique for FSO communication systems. Compared with traditional MIMO technology, this technology has the advantages of avoiding inter-channel interference, eliminating the needs of inter-antenna synchronization, and provides a robust system against channel estimation errors. Space shift keying (SSK) is a special case of SM modulation. It only uses the antenna index as a means of transmitting information. Compared with SM modulation, it is easier to implement. In this paper, we analysis the performance of free space optical spatial modulation system using decode and forward (DF) relaying under Malaga (M) aggregate channel. We evaluate the probability density function of the sum of the squares of the difference between the two channel coefficients under the M-channel model to develop an analytical expression for the average bit error rate (ABER) of the system under consideration. On the basis of theoretical derivation, the influence of the pointing error, the number of relay nodes, and atmospheric turbulence (from weak to strong) on ABER are analyzed through simulation. It is found that the ABER of the FSO system remains almost unchanged under moderate to strong atmospheric turbulence. In addition, it is found that compared with the other two turbulence regimes, the performance of the considered system in the weak turbulence state is poor. Moreover, as the number of relay nodes and the pointing error increase, the ABER of the system deteriorates. It is also observed that the performance of the FSO system degrades with an increasing number of optical sources. Therefore, a trade-off between spectral efficiency and ABER performance can be observed. The research and analysis of the performance of the serial DF relaying FSO SM system can provide a good theoretical basis for future engineering implementation.
15:10-15:30 Jiahao Huo, University of Science & Technology Beijing, China
Title: Theoretical Analysis of PD Thermal Noise for PDM-IM Signals by using Different SVRs
Biography: JIAHAO HUO was born in Hebei, China,1989. He received the M.S. degree from the Changchun University of Science and Technology, in June 2014, the Ph.D. degree from the University of Science and Technology Beijing, in 2019. He joined the Photonics Research Center, The Hong Kong Polytechnic University, in June 2016, as a Research Assistant. He is currently a Lecturer with the University of Science and Technology Beijing. His research interests include high-capacity IM/DD systems for optical interconnect, optical access networks, and digital signal processing techniques for advanced modulation formats.
Abstract: Driven by the growing traffic demand in inter- and intra-data center connections, polarization division multiplexing intensity modulation with direct detection (PDM-IM-DD) using a Stokes vector receiver (SVR) has been proposed. However, for different SVR architectures, the corresponding demultiplexing matrix is required to recover the Stokes vectors from the detected signals, which combined with an arbitrary state of polarization (SOP), will change the effect of noise dynamically and significantly influence the system performance. In this paper, theoretical PD thermal noise models using four SVRs are developed and the simulation of 224 Gbit/s PDM-PAM4-DD transmission is analyzed.
30 August 24th GMT+8 Session T1: Optical Communications and Networks Room A ID: 661 4324 8539 Chair: Prof. Jianping Li, Guangdong University of Technology
9:30-9:50 Ning Jiang, University of Electronic Science and Technology of China, China
Title: Secure WDM Optical Communication Based on Private Chaotic Spectral Phase Encryption
Biography: Prof. Ning Jiang received the B.S. degree in the University of Electronic Science and Technology of China (UESTC) in 2005 and the Ph.D. degree in the Southwest Jiaotong University in 2012. He is currently working at the School of Information and Communication Engineering, University of Electronic Science and Technology of China. He has published 77 authored or coauthored SCI research papers including two highly-cited papers and 28 top-journal papers (H-index 18). His current research works focus on the all-optical secure communications and optical access networks. He is a senior member of IEEE society, a member of Chinese Association for Cryptologic Research, a member of Chinese Optical Society and a member of the Optical Society of America (OSA). He also serves as a review editor of Optical Communications and Networks and Non-Conventional Communications and Networks, as well as a reviewer for several top-level journals, including Photonics Research, Optics Express, Optics Letters, Journal of Lightwave Technology, IEEE Photonics Technology Letters, IEEE Journal of Selected Topics in Quantum Electronics, IEEE Communication Letters, Applied Optics, IEEE Photonics Journal, Chinese Physics B, and Chinese Optics Letters.
Abstract: As the ongoing demand for communication capacity, the information security of communication systems has attracted more and more attention. In this work, we propose and demonstrate a novel physical layer encryption scheme for wavelength division multiplexing (WDM) systems based on private chaotic spectral phase encryption. In the proposed scheme, a pair of chaotic signals for spectral phase encryption are privately generated by two local semiconductor lasers subject to a common random-phase-constant-amplitude injection. We experimentally demonstrate the secure transmissions of four 12.5 Gb/s WDM channels over 50-km single-mode fiber (SMF) to confirm the feasibility of the proposed scheme, and systematically investigate the encryption and decryption performances by numerical simulations. The results indicate that the WDM signal is well encrypted as a noise-like signal at the transmitter end. All channels are deeply overlapped and indistinguishable, as such the eavesdropper cannot directly implement channel isolation by a demultiplexer. At the receiver end, the WDM signal can be correctly recovered after chaotic spectral phase decryption, with a BER lower than 10-5. The proposed encryption scheme is compatible with the existing WDM optical communication systems, and does not require replacing the hardware such as the light source, amplifiers, transmitters and receivers. Besides, our scheme needs only one pair of encryption and decryption devices for all the WDM channels, it is suitable for solving the security challenges in resource-limited optical fiber links.
9:50-10:10 Lixia Xi, Beijing University of Posts and Telecommunications, China
Title: An Overview on Fiber-Optic transmission system based Nonlinear Frequency Division Multiplexing
Biography: Lixia Xi received her BS and MS degrees in physics from Hebei Normal University and Beijing Normal University in 1994 and 1997, respectively. She received her PhD in physical electronics from Beijing University of Posts and Telecommunication in 2005. She is currently a professor in State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications. Her research interest main focus on high-speed optical communication systems.
31 Abstract: Kerr nonlinearity has been considered as a major factor limiting the transmission capacity in high speed and long-haul optical fiber communications. To address this issue, a novel nonlinear transmission scheme called nonlinear frequency division multiplexing (NFDM) has been proposed, which has natural immunity to Kerr nonlinearity impairment [2-6]. In this transmission scheme, information is encoded in the nonlinear spectra by nonlinear Fourier transform (NFT) (also called the inverse scattering transform). These nonlinear spectra propagate independently with nonlinear Schrödinger equation, which means there is no crosstalk among the nonlinear spectral components. Hence, the NFDM system possesses inherent robustness to fiber nonlinearity. In this talk, I will give an overview on the progress of NFDM research in recent years. The principle and the main techniques of the NFDM systems will be introduced. Our works on the nonlinear-frequency-packing technique and frequency offset estimation for NFDM system will be given. The challenges of NFDM transmissions in practical implementation conditions will be analyzed and the outlook will be provided.
10:10-10:30 Chen Chen, Chongqing University, China
Title: MIMO Visible Light Communication: A User-Centric Perspective
Biography: Dr. Chen Chen received the B.S. and M.Eng. degrees from the University of Electronic Science and Technology of China, Chengdu, China, in 2010 and 2013, respectively, and the Ph.D. degree from Nanyang Technological University, Singapore, in 2017. He is currently an Assistant Professor with the School of Microelectronics and Communication Engineering, Chongqing University, China. His research interests include visible light communications, LiFi, visible light positioning, optical access networks, and digital signal processing.
Abstract: Multiple-input multiple-output (MIMO) is a promising technology to efficiently improve the achievable rate of light-emitting diodes (LEDs) enabled visible light communication (VLC) systems. For conventional MIMO techniques such as spatial diversity (SD) and spatial multiplexing (SMP), the working mode of each LED transmitter is independent of users’ spatial positions. In this talk, we discuss three user-centric MIMO techniques, including SD/SMP switching, adaptive SMP and SD-aided adaptive SMP, for achievable rate improvement of indoor MIMO-VLC systems, by exploiting users’ spatial positions as a new degree of diversity. Our results show that the achievable rate of a 4×4 MIMO-VLC system in a typical indoor environment can be significantly improved by applying the user-centric MIMO techniques compared with the conventional ones. Moreover, we also show that user-centric MIMO techniques outperform conventional ones under the condition of only slightly increased computational complexity with limited feedback information.
10:30-10:50 Hui Yang, Beijing University of Posts and Telecommunications, China
Title: Edge Intelligent-oriented Optical Network and Control
Abstract: This talk presents a novel edge Intelligent-oriented optical network and control with artificial intelligence algorithm, which can enhance the performances of edge optical networking and control plane.
10:50-11:10 Jiangbing Du, Shanghai Jiao Tong University, China
Title: Machine learning aided inverse design of optical fiber link for improved mode-division-multiplexing
Biography: Dr. Jiangbing DU received B.S. (02-05) and M.S. (05-08) degrees respectively from College of Physics and Institute of Modern Optics, Nankai University, Tianjin, China. He obtained his PhD degree (08-11) in Electronic Engineering from The Chinese University of Hong Kong. He was with Huawei technologies from 2011 to 2012. He joined Shanghai Jiao
32 Tong University since 2012. Dr. DU is a senior member of IEEE and OSA. He is the author or coauthor of over 150 journal and conference papers. His research interest includes optical interconnection, photonic integration and photonic signal processing.
Abstract: Few mode fiber (FMF) supporting many modes with weak-coupling is highly desired in mode division multiplexing (MDM) systems. The multi-parameter design of FMF becomes quite difficult, inaccurate and time-consuming when it comes for complex fiber structures for supporting many high order modes. In this work, we demonstrate a machine learning method using neural network to inversely design the desired FMF based on multiple-ring step-index structure. By using the minimum effective index difference between adjacent modes as the weak-coupling optimization aim, we realized the inverse design of 4-ring step-index FMFs for supporting 4, 6 and 10 -mode operation, and 6-ring step-index FMF for supporting 20-mode operation. This method provides high-accuracy, high-efficiency and low-complexity for fast and reusable design of optical fibers, including particularly weak-coupling FMF in this work. It can be widely extended to a lot of fibers and has great potential for instantaneous applications in the optical fiber industry. References [1] J. Li, J. Du, L. Wang, S. Jiang, L. Ma, C. Cai, L. Zhu, A. Wang, M.Li, C. Hao, J. Wang, and Z. He, "Experimental demonstration of few-mode Raman amplifier with flat gain covering 1530-1605 nm, "Optics Letters, 43(18), 4530-4533 (2018) [2] Y. Chen, J. Du, J. Li, L. Shen, J. Luo, and Z. He, "Time-wavelength-mode equalization by PSO for random fiber laser based FMF Raman amplifier, " in Optical Fiber Communication Conference Postdeadline Papers, OSA Technical Digest (Optical Society of America, 2020), paper W4B. 1. [3] Y. Chen, J. Du, Y. Huang, K. Xu, and Z. He, "Intelligent gain flattening of FMF Raman amplification by machine learning based inverse design, " in Optical Fiber Communication Conference Postdeadline Papers, OSA Technical Digest (Optical Society of America, 2020), paper T4B. 1. [4] Z. He, J. Du, W. Shen, Y. Huang, C. Wang, K. Xu, and Z. He, “Inverse design of few-mode fiber by Neural Network for weak-coupling optimization”, in Optical Fiber Communication Conference Postdeadline Papers, OSA Technical Digest (Optical Society of America, 2020), paper W2A.15.
11:10-11:30 Xianfeng Tang, Beijing University of Posts and Telecommunications, China
Title: Physical Layer Encryption of CO-OFDM System Based on Cellular Automata and DNA Encoding
Biography: Xianfeng Tang received the Ph.D. degree from Beijing University of Post and Telecommunication in 2011. He is currently an associate professor in State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunication. His researches mainly focus on optical secure transmission and optical signal processing. Email: [email protected].
Abstract: Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is a promising candidate for the future long distance optical communication due to its advantages of high spectral efficiency, flexible bandwidth allocation, high receiver sensitivity, flexible modulation format and robustness to fiber dispersion. However, in the coherent OFDM system, the transmitted signal is easy to be eavesdropped, leading to the data security problems. Therefore, in recent years, many researchers have proposed encryption schemes to enhance the security of transmitted data. In this paper, we propose a new encryption scheme for the CO-OFDM system which combines Cellular Automata and DNA encoding to improve the security of the encryption system using key sequences generated by the 4-dimension hyper-chaotic system. Hyper-chaotic system has more complex pseudo-randomness in time, which makes it a good choice to generate key sequence with good randomness and unpredictability. For the encryption process, increased complexity of encryption operations is the basic requirement to fully utilize the randomness of the key to enhance the security. Cellular Automata has been widely used in many fields and it can effectively enhance the randomness of a dynamic system.
33 Meanwhile, biological DNA encoding scheme has the characteristics of large-scale parallelism, huge storage capacity and ultra-low power consumption, which makes it a promising technique for dynamic encryption. Here, we introduce Cellular Automata and DNA encoding into CO-OFDM system to realize the encryption and the scrambling performance of the transmitted data and the complexity of the encryption system are improved. Simulations of the proposed scheme are carried out in a 16-QAM CO-OFDM system at the symbol rate of 10 Gsps. By employing Cellular Automata and DNA encoding, a key space of ~ can be achieved in the proposed encryption scheme, which can greatly improve the system security. The results show that the authorized user can successfully decrypt the received signal, while the eavesdroppers cannot derive the useful information and the bit error rate (BER) keeps around 0.5. A small optical signal to noise ratio (OSNR) penalty of 0.5 dB will be introduced to achieve the same BER before and after encryption due to the error propagation of Cellular Automata. In this way, the proposed encryption method can effectively protect the CO-OFDM data from attacks by eavesdroppers or illegal users, and the system transmission performance is still very good with acceptable OSNR penalty.
11:30-11:50 Feng Tian, Beijing University of Posts and Telecommunications, China
Title: A 3-Dimensional Adaptive Hierarchical QAM Scheme for Elastic Optical Network
Abstract: In this paper, we introduce a novel 3-Dimensional adaptive hierarchical Quadrature Amplitude Modulation (QAM) scheme for elastic optical networks. The scheme can flexibly adjust the spacing between constellation points and control bit-mapping to provide different bits with different degrees of protection according to channel conditions and Quality of Service (QoS) requirements, to improve the system efficiency of different service multiplexing transmission. The simulation results indicate that the multi-dimensional constellation effectively improves the receiver sensitivity and reduces the system bit error rate. The proposed scheme has a huge potential in the future high-speed elastic optical network.
References [1] Dj.M. Maric, P.F. Meier and S.K. Estreicher: Mater. Sci. Forum Vol. 83-87 (1992), p. 119 [1]M. B. Pursley, J. M. Shea, "Adaptive nonuniform phase-shift-key modulation for multimedia traffic in wireless networks," IEEE Journal on Selected Areas in Communications, vol.18, pp. 1394-1407, 2000. [2]H. Mukhtar, M. E. Tarhuni, "An Adaptive Hierarchical QAM Scheme for Enhanced Bandwidth and Power Utilization," IEEE Transactions on Communications, vol.60, pp. 2275-2284, 2012. [3]B. Liu, L. J. Zhang, X. J. Xin, et al, "Flexible generation of optical nonuniform bit-mapping signal based on InP transmitter module," Optics Letters, vol.39, pp. 220-223, 2014. [4]M. O. Zamkotsian, K. P. Peppas, F. Lazarakis and P. G. Cottis, "Multilevel Spatial Hierarchical Modulation: An Efficient Scheme for Unequal Error Protection Under Rician Fading," in IEEE Transactions on Vehicular Technology, vol. 64, no. 11, pp. 5177-5186, Nov. 2015. [5]H. Kim, Y. Shang, S. Kim and T. Jung, "New hierarchical modulation scheme using a constellation rotation method," 2016 IEEE International Conference on Signal and Image Processing (ICSIP), Beijing, 2016, pp. 703-707. [6]M. Dalla Santa, C. Antony, G. Talli and P. D. Townsend, "Power Budget Improvement in Passive Optical Networks Using PAM4 Hierarchical Modulation," in IEEE Photonics Technology Letters, vol. 29, no. 20, pp. 1747-1750, 15 Oct.15, 2017. [7]Hua Sun, Yiru Shen, Soon Xin Ng and L. Hanzo, "Turbo Trellis Coded hierarchical modulation for cooperative communications," 2013 IEEE Wireless Communications and Networking Conference (WCNC), Shanghai, 2013, pp. 2789-2794, doi: 10.1109/WCNC.2013.6555002. [8]H. Sun, S. X. Ng and L. Hanzo, "Turbo Trellis-Coded Hierarchical-Modulation Assisted Decode-and-Forward Cooperation," in IEEE Transactions on Vehicular Technology, vol. 64, no. 9, pp. 3971-3981, Sept. 2015, doi: 10.1109/TVT.2014.2366689. [9]H. Sun, S. X. Ng, C. Dong and L. Hanzo, "Decode-and-Forward Cooperation-Aided Triple-Layer Turbo-Trellis-Coded Hierarchical Modulation," in IEEE Transactions on Communications, vol. 63, no. 4, pp. 1136-1148, April 2015, doi: 10.1109/TCOMM.2014.2387164. [10]B. Liu, L. J. Zhang, X. J. Xin, et al, "Flexible generation of optical nonuniform bit-mapping signal based on InP
34 transmitter module," Optics Letters, vol.39, pp. 220-223, 2014.
11:50-12:10 Jing Zhang, University of Electronic Science and Technology of China, China
Title: The Cascaded Neural Network for MFI and OSNR monitoring
Biography: Jing Zhang, received her Ph.D. degree in optical engineering from the University of Electronic Science and Technology of China, Chengdu, China, in 2013. She has been with the University of Electronic Science and Technology of China since 2007, where she is currently an Associate Professor. From 2015 to 2016, she was a Visiting Research Scholar with the Department of Electrical and Computer Engineering, National University of Singapore, Singapore. Her current research interests include optical fiber communication and network, digital signal processing at the transceiver, nonlinear equalization with machine learning.
Abstract: With the rapid growth of flexibility, scalability and reliability on optical fiber communication, the next generation optical network becomes more complex and transparent. A healthy quality of optical transmission links is essential for the next generation optical transparent network. With the help of optical performance monitoring (OPM), we can provide precise information about the channel condition and the real-time quality of optical signals, which can be utilized for the optimization of the transmission performance and management of the network. Recently, there is growing interest in the application of deep learning (DL) in different parameters’ monitoring and overcome the bottleneck of monitoring when different impairments are physically inseparable in traditional OPM. Most of the neural networks are used separately to monitor the modulation format or the OSNR, respectively. In this paper, we propose and experimentally demonstrate a novel cascaded NN to simultaneously identify the MFI and monitor the OSNR. We implement the modulation format identification (MFI) in the first-order network, since the signal’s format is a useful information for the following estimation. Then the identified modulation format is input to the following network as a label to monitor the OSNR. However, the estimation accuracy of MFI in the first-level network cannot reach 100%, the wrong label for the second-level network may result in estimation accuracy degradation. To guarantee the estimation accuracy of the second-order network, we propose to use the KNN-based anomaly detection prior to the OSNR monitoring. If there is anomaly, the OSNR monitoring will be estimated by a complex NN, otherwise some small-scale networks as the second-level networks are used for OSNR monitoring.
35 Session T2: Quantum Information and Related Quantum Technologies Room B ID: 613 2916 2069 Chair: Prof. Yin Cai, Xi’an Jiaotong University, China
Keynote Speaker 9:30-10:00 Peng Xue, Beijing Computational Science Research Center, China
Title: Parity-time-symmetric quantum walks Biography: Dr Peng Xue is a Professor of Beijing Computation Science Research Center. Dr Xue received her Bachelor of Science degree in 1999 and a PhD in 2004 from University of Science and Technology of China supervised by Professor Guang-Can Guo. She continued research on quantum information science as postdoctoral at the University of Innsbruck, Austria, and then at the University of Calgary, Canada. Dr Xue joined the Physics Department of Southeast University in 2009. In 2018, she moved with her team to Beijing Computation Science Research Center. Dr Xue’s current research interests belong in a broad sense to the field of physical implementation of quantum computing and quantum simulation idea, especially on experimental realization of quantum information processing with linear optics. Apart from the design of interactions and quantum gates this research also includes the analysis of decoherence source as well as state preparation and measurement techniques as prerequisites for quantum computations. Due to the interdisciplinary character of this research field she has become interested in various physical systems, both from the field of linear optics, the field of atomic, molecular and optical physics, as well as the field of solid state physics. Her publications can be found at https://scholar.google.com/citations?hl=zh-CN&user=S8Ub3uoAAAAJ&view_op=list_works&sortby=pubdate Abstract: The study of non-Hermitian systems with parity-time (PT) symmetry is a rapidly developing frontier in recent years. Experimentally, PT-symmetric systems have been realized in classical optics by balancing gain and loss, which holds great promise for novel optical devices and networks. Here we report the first experimental realization of passive PT-symmetric quantum dynamics for single photons by temporally alternating photon losses in the quantum walk (QW) interferometers. The ability to impose PT symmetry allows us to realize and investigate Floquet topological phases driven by PT-symmetric QWs. We observe topological edge states between regions with different bulk topological properties and confirm the robustness of these edge states with respect to PT-symmetry-preserving perturbations and PT-symmetry-breaking static disorder. Our results pave the way for realizing quantum mechanical PT-synthetic devices and augur exciting possibilities for exploring topological properties of non-Hermitian systems using discrete-time QWs.
References [1] L. Xiao et al., Nat. Phys. 13, 1117-1123 (2017). [2] K. K. Wang et al., Phys. Rev. Lett. 122, 020501 (2019). [3] L. Xiao et al., Nat. Phys. 16, 761-766 (2020).
Keynote Speaker 10:00-10:30 Xiaojun Jia, Shanxi University, China
Title: Continuous Variable quantum teleportation through fiber-channel Biography: Xiaojun Jia, Professor in Shanxi University. He received his BS degree from the department of Physics, Shanxi University in 2000, and his PhD degrees from Institute of Opto-Electronics, Shanxi University in 2005, respectively. After his graduation, he continued staying in Institute of Opto-Electronics as a faculty member. From then on, he has finished a series of work in continuous variable quantum information processing. During this period, he has published more than 80 technical journal papers.
36 Abstract: Since quantum teleportation was proposed in 1993, various researches on theoretical analysis and experimental implementation have been successively completed. Quantum teleportation serves as the cornerstone for building quantum information networks, and it also greatly contributes to completing quantum computation and quantum communication. It means to transfer an unknown quantum state from one station to another over certain distance with the help of Einstein-Podolsky-Rosen (EPR) entangled state shared by sender and receiver. Based on the generation of non-classical states of light at wavelength of fiber transmission window, we experimentally realize deterministic quantum teleportation of an optical coherent state through 6.0 kilometer fiber fiber-channel. The fidelity of 0.62±0.03 is achieved for the retrieved quantum state, which breaks through the classical limit of 1/2. A fidelity of 0.69±0.03 breaking through the no-cloning limit of 2/3 has also been achieved when the transmission distance is 2.0 kilometers.
10:30-10:50 Lijian Zhang, Nanjing University, China
Title: High-dimensional quantum states: generation and characterization
Abstract: High-dimensional quantum states allow to go beyond the limit the two-dimensional quantum systems, the qubits, and play an important role in various quantum information processing applications including quantum computation, communication and imaging. In this talk I will summarize our recent efforts on the generation and characterization of high-dimensional quantum states, including a compact high-dimensional quantum source by integrating a metasurface with a nonlinear crystal [1], an experimental observation of the geometry of the three-dimensional quantum systems [2], and a machine-learning-based method to characterize the high-dimensional quantum systems [3].
References [1] Lin Li et al, Science 368, 1487-1490 (2020). [2] Jie Xie et al, arXiv:1909.05463 (2019). [3] Ningping Cao et al, arXiv:2005.01540 (2020).
10:50-11:10 Zhangqi Yin, Beijing Institute of Technology, China
Title: Quantum Information processing with levitated nanodiamonds
Biography: Zhang-Qi Yin is a Professor at Center of Quantum Technology Research, School of Physics, Beijing Institute of Technology, China. He received B.Sc., M.Sc., and Ph.D. degrees from Xi’an Jiaotong University, China. From 2010 to 2019, he worked in Wuhan Institute of Physics and Mathematics, University of Science and Technology of China, and Tsinghua University. His research interests include quantum information, quantum computation and quantum precise measurement.
Abstract: We propose a scheme to realize the controlled-phase gates between nitrogen-vacancy (NV) centers in an optically trapped nanodiamond, through a uniform magnetic field-induced coupling between the NV centers and the torsional mode of the levitated nanodiamond. The gates are insensitive to the thermal noise of the torsional mode. By combining the scheme with the dynamical decoupling, it is found that the high-fidelity universal quantum gates are possible with present experimental technology. The proposed scheme is useful for an NV-center-based quantum network and distributed quantum computation.
37 11:10-11:30 Yong Zhang, Nanjing University, China
Title: Nonlinear multiplexing holography in nonlinear photonic crystal
Biography: Yong Zhang is a Professor at College of Engineering and Applied Sciences and National Laboratory of Solid State Microstructures, Nanjing University, China. He obtained his Ph.D. in Physics from Nanjing University in 2007. He then spent two years as a postdoctoral fellow at University of Arkansas. His research interests are in the areas of nonlinear optics, laser, and micro/nano structures.
Abstract: Holography involves using a hologram to reconstruct both the intensity and phase information of an object. Recently, the holography technique has been extended from the linear optical region to nonlinear optics. Since the encoded information is reconstructed in the newly-generated wavelength, nonlinear holography has been viewed as a promising technique for high-density optical storage and high-security optical encryption. However, the multiplexing capacity needs to be significantly enhanced for practical applications. Here, we propose and experimentally demonstrate several effective schemes for nonlinear multiplexing holography by using 2D and 3D nonlinear photonic crystals.
11:30-11:50 Pei Zhang, Xi'an Jiaotong University, China
Title: Mode sorter with astigmatic Gouy phase
Biography: Prof. Pei Zhang received his PhD degrees in Optics from University of Science & Technology of China in 2007. In 2012 he worked at University of Bristol as a Senior Visiting Scholar. Now he is a Professor in School of Physics, Xi'an Jiaotong University. His research interests include quantum information, quantum communications, structured light and imaging.
Abstract: The well-known Gouy phase devices with mode converting properties that have early been exploited in high-efficient modes converting system. The devices have recently been developed in works sorting index p of Laguerre-Gaussian (LG) modes. This approach can be readily combined with existing orbital angular momentum (OAM) l mode sorters to provide a complete sorting theory[1]. However, the principles are bulky for containing interferometric and diffractive devices simultaneously. Here we provide an essential mode sorter operating on Hermite-Gaussian (HG) modes. The method is to fabricate an appropriate structure with two cylindrical lenses (CLs). An accumulated astigmatic Gouy phase between cylindrical lenses, e.g. Pi/2, seems well suited to the scalable phase requirements of x or y direction. Launching the HG modes with indices m, n, the astigmatic directions x and y will attach Gouy phases corresponding to m and n respectively. The value of Gouy phase is variable by adjusting the distance between the two CLs. CLs structure can be adapted to interferometers to constitute a HG mode sorter. This sorter will work with HG, LG, or OAM modes, thus can be called a general transverse mode sorter. The correspondence of astigmatic directions and HG modes indices provides convenience to solve the degeneracy problems of indices. Based on these outstanding properties, this mode sorter will be widely exploited in both of the classical and quantum fields. References [1] D. Fu, Y. Zhou, R. Qi, S. Oliver, Y. Wang, S. M. Rafsanjani, J. Zhao, M. Mirhosseini, Z. Shi, P. Zhang, and R. W. Boyd: Opt. Express , Vol. 26, No. 25, 33057-33065 (2018).
38 Session T3: Optical Communications, Networks and Ultrafast Photonics Room A ID: 661 4324 8539 Chair: Prof. Tianye Huang, China University of Geosciences, China
13:30-13:50 Changyuan Yu, The Hong Kong Polytechnic University, Hongkong
Title: Indoor Visible Light Communication Systems with Dimming Control
Biography: Changyuan YU received his Ph.D. in Electrical Engineering from the University of Southern California, USA in 2005. He was a visiting researcher at NEC Labs America in Princeton, USA in 2005. He then joined the faculty of National University of Singapore (NUS) in 12/2005, where he served as the founding leader of Photonic System Research Group in Department of Electrical and Computer Engineering till 12/2015. He was also a joint senior scientist with Institute for Infocomm Research (I2R), Agency for Science, Technology and Research (A*STAR) in Singapore in this period. In 12/2015, he joined the faculty of The Hong Kong Polytechnic University, where he is now a full professor in Department of Electronic and Information Engineering. And he also continues as an adjunct faculty member of NUS. His research focuses on photonic devices, subsystems, optical fiber communication and sensor systems, and biomedical instruments. He has been the PI/co-PI/co-I of 40+ research projects with over 9 million US dollars fund. He has authored/co-authored 6 book chapters and 470+ journal/conference papers (84 keynote/invited, including OFC2012 in USA). He served in technical program committee (TPC) or organizing committee for 80+ international conferences, and Telecommunications Standards Advisory Committee for Singapore government. His group won 6 best paper awards in conferences and the national championship (biomedical area) in the 3rd China Innovation and Entrepreneurship Competition in 2014.
Abstract: Indoor visible light communication (VLC) systems feature multiple functionalities including illumination and communication. The dimming control of LED is important to save power and meet different lighting requirements. This paper is a review of the data transmission schemes with dimming control which we proposed recently. These conceptual designs can achieve stable and reliable transmission quality, satisfying both communication and illumination requirements.
References [1]J. Grubor, S. Randel, K. D. Langer, and J. W. Walewski: IEEE J. Lightw. Technol. Vol. 26.24 (2008), pp. 3883−3892. [2]F. Zafar, D. Karunatilaka, and R. Parthiban: IEEE Wireless Commun. Vol. 22.2 (2015), pp. 29–35. [3]S. Rajagopal, R. D. Roberts, and S. K. Lim: IEEE Commun. Mag. Vol. 50.3 (2011), pp. 72–82. [4]Z. Wang, W. Zhong, C. Yu, J. Chen, C. P. S. Francois, and W. Chen: Opt. Exp. Vol. 20.17 (2012), pp. 18861–18868. [5]X. You, J. Chen, H. Zheng, and C. Yu: IEEE Photon. J. Vol. 7.4 (2015), pp. 1–12. [6]X. You, J. Chen and C. Yu: IEEE Access Vol. 6 (2018), pp. 77675-77684. [7]H. Elgala, R. Mesleh, and H. Haas: Vol. 55.3 (2009), pp. 1127–1134.
13:50-14:10 Zhensen Gao, Guangdong University of Technology, China
Title: Chaotic optical communication: recent progresses and challenges Biography: Prof. Zhensen Gao is currently a Research Professor at the School of Information Engineering, Guangdong University of Technology, Guangzhou, China. He was previously affiliated with Nokia Bell Labs as a Research Scientist, where he was responsible for the research and standardization of next generation optical access network. His current research works focus on the secure optical communication, high speed optical transmission technologies, and microwave photonics. He is the author or coauthor of more than 60 peer-reviewed articles in the international prestigious journals and conferences. Prof. Gao holds more than 20 inventions including 3 US issued patents. Currently, he is serving as the editor board of Journal of Physics and Advanced Applications, and a Review Editor for Frontiers in Communications and Networks. He is a
39 regular reviewer for OSA/IEEE related various photonics journals. Abstract: Optical chaos is emerging as a promising solution for secure optical communication in recent years. In this talk, we will review the recent progresses and demonstrations of secure chaotic optical communication ranging from various optical chaotic signal generation techniques, security issues of chaotic optical communication system to chaotic key distribution. Key technical challenges of chaotic optical communication will be also addressed. The scientific problems underlying chaotic optical communication will be envisioned as well. References [1] M. Sciamanna, and K. A. Shore: Physics and applications of laser diode chaos, Nature Photonics, Nature Photonics, vol. 9, pp 151-162 (2015). [2] Argyris, A. et al. Chaos-based communications at high bit rates using commercial fibre-optic links. Nature 438, 343–346 (2005).
14:10-14:30 Lin Huang, Zhejiang University, China Xueming Liu, Nanjing University of Aeronautics and Astronautics, China
Title: Real time characterization of buildup dynamics of solitons in ultrafast fiber lasers Abstract: Mode-locked fiber laser constitutes an ideal platform for investigating soliton dynamics. The emerging time-stretch dispersive Fourier transform technique open up the way of characterizing real-time shot-to-shot spectral evolution of soliton dynamics. Here we report our recent work of the real-time buildup dynamics solitons in carbon nanotube mode-locked fiber lasers, including the solitons, soliton molecules and harmonic mode-locking.
14:30-14:50 Chun-Nien Liu, National Chung Hsing University, Taiwan
Title: Simulation and Package of Si-Photonics Transceiver Module for High Speed Data Center and Cloud Network Biography: Chun-Nien Liu is an Assistant Professor in the Department of Electrical Engineering, National Chung Hsing University, Taichung, Taiwan. His research interests are broadband Cr-doped fiber, specialty fiber laser, fiber microlens, near-field measurement of fiber coupling, package of laser module, and high-power LED based on glass host. Dr. Liu was a recipient of the Innovation Research of Taiwan Comprehensive University System and Young Scholars Award in 2016, and the Ministry of Science and Technology Academic Paper Award in 2019. Abstract: Recently, the development of Si-photonics technology integrates optics and electronic components into a single Si-photonics transceiver module, which can greatly improve the transmission capacity of the data center and simplify the interconnection system. The either grating couplers or fiber edge-attach to waveguide is used in commercial Si-photonics products. However, one of the major sources of insertion loss between integrated optical silicon waveguide and fiber is mode mismatch. A typical Si-photonics transceiver has a rectangular light outlet and results in an elliptic light field, which makes it difficult to couple from a transceiver to a fiber. In order to realize the high-throughput and high-efficiency data transmission of Si-photonics transceiver module, reducing optical loss between the waveguide and interconnect fiber must be accurately aligned. In this study, a novel of micro-lensed fiber employing automatic grinding and spin-on-glass coating techniques for Si-photonic module coupling to single mode fiber is demonstrated. Compared with other micro-lensed fabrication, the spin-on-glass coating technique has significantly adjusted the offset, radius of curvature and alignment tolerance, which are beneficial for application of Si-photonics package use in high-performance light-wave and low-cost interconnection.
14:50-15:10
40 Zaidao Wen, Northwestern Polytechnical University, China
Title: Intelligent synthetic aperture radar target perception and recognition: from automatic to autonomous
Biography: Zaidao Wen received the B.S. and Ph.D in electronic engineering from Xidian University, Xi'an, China, in 2010 and 2017, respectively. Between 2014-2015, he was an Exchange Ph.D. student with the Intelligent Systems Group, Department of Computer Science and Artificial Intelligence, Uni versity of the Basque Country UPV/EHU, Spain. He is currently an associate professor in the School of Automation, Northwestern Polytechnical University. His current interests include brain inspired modeling, pattern recognition and machine learning and their applications in Synthetic Aperture Radar image interpretation and automatic target recognition.
Abstract: Synthetic aperture radar (SAR), benefiting from its all-day and weather working condition, is one of the most useful imaging sensors for automatic earth observation. Current spaceborne or airborne SAR sensor is served as an eye to see the detected scene without sufficient ability of further onboard autonomous interpretation and decision making as the brain does because of the limitation by the level of intelligent algorithms, computing resources, hardware, and so on. In this speech, we report some efforts made by my group on some intelligent algorithms from automatic to autonomous processing for SAR target recognition task. We present the idea and the insight on two typical onboard applications. More specifically, we firstly introduce an intelligent target-oriented SAR imaging framework involving a designed generative prior model, which aims at enhancing the interested target scatters while suppressing the background clutters for autonomously target focused attention. Then, we introduce a rotation-awareness based self-supervised learning model for SAR target recognition under the condition of deficient training samples.
15:10-15:30 Kan Wu, Shanghai Jiaotong University, China
Title: Integrated beam steering devices and lidar
Biography: Dr. Kan Wu received his bachelor and master degrees in Shanghai Jiao Tong University in 2006 and 2009. He received his Ph.D. in Nanyang Technological University in 2013. Since 2013, Dr. Wu is an associate professor in the department of Electronic Engineering in Shanghai Jiao Tong University. Dr. Wu’s research interests include mode-locked fiber lasers, photonic integration and optoelectronic devices. Dr. Wu has published more than 50 papers including journals of Nature Communications, Light Science and Applications, Physical Review X, Optics Letters, etc. Dr. Wu received NSFC fund for Excellent Young Scholars in 2019.
Abstract: Compared to mechnically steering mirror, all solid-state integrated beam steering devices provides significant reduction on the weight and volumne for future lidar applications. We will briefly introduce our recent progress on integrated beam steering devices and solid-state lidar based on various photonic integration platforms.
15:30-15:50 Weiqing Gao, Hefei University of Technology, China
Title: Passively mode-locked fiber laser at 1.95 µm waveband using saturable absorber based on SnSe nanoparticles
Abstract: In this paper, tin selenide (SnSe) nanoparticles (NPs) are employed as a saturable absorber (SA) in a passively mode-locked thulium (Tm)-doped fiber laser for the first time. The mode-locked pulse has a central wavelength of 1963 nm and a 3-dB bandwidth of 4.3 nm. The repetition rate is 24.59 MHz and the full width at half maximum (FWHM) of the pulse is 1.2 ps. Harmonics from the second order to the eighth order are observed. Our results prove that the SnSe NPs have excellent
41 nonlinear saturable absorption properties and could have wide potential applications on ultrafast photonics in mid-infrared waveband.
42 Session T4: Quantum Information and Related Quantum Technologies Room B ID: 613 2916 2069 Chair: Prof. Feng Li, Xi’an Jiaotong University, China
13:30-14:00 Keynote Speaker Xiulai Xu, Institute of Physics, CAS, China
Title: Purcell effect and lasing from quantum dots in a topological photonic crystal nanocavity
Biography: Dr Xiulai Xu received BA degree in Electronic Engineering from the Jilin University in 1996, and Ph.D. degree from Cavendish Laboratory, University of Cambridge in 2005. He has been working as research scientist, senior research scientist in Hitachi Cambridge Laboratory from 2005-2011, and was also a research fellow in Clare Hall, University of Cambridge during 2009-2011. He is currently a professor with Institute of Physics, Chinese Academy of Sciences on quantum optoelectronics and nano-photonics.
Abstract: We report on a low-threshold topological nanolaser and Purcell effect from single quantum dots (QDs) in a 2D topological PhC nanocavity. Based on the second-order corner state, a topological nanocavity is designed and fabricated into GaAs slab with InGaAs QDs embedded with optimized quality factor. We demonstrate the robustness of the corner state with respect to the defects in the bulk of PhC. In the fabricated cavities with a high density of QDs, a topological laser is observed with a low threshold of about 1 μW. In the cavities with a low density, we demonstrate the weak coupling to single QD by the enhancement of photoluminescence intensity and spontaneous emission rate.
References: [1] Weixuan Zhang, Xin Xie, Huiming Hao, Jianchen Dang, Shan Xiao, Shushu Shi, Haiqiao Ni, Zhichuan Niu, Can Wang, Kuijuan Jin, Xiangdong Zhang and Xiulai Xu, “Low-threshold topological nanolasers based on the second-order corner state,” Light Science & Applications 9, 109 (2020). [2] Xin Xie, Weixuan Zhang, Xiaowu He, Shiyao Wu, Jianchen Dang, Kai Peng, Feilong Song, Longlong Yang, Haiqiao Ni, Zhichuan Niu, Can Wang, Kuijuan Jin, Xiangdong Zhang, and Xiulai Xu, “Cavity Quantum Electrodynamics with Second-Order Topological Corner State,” Laser Photonics Rev. 14, 1900425 (2020).
14:00-14:20 Chunhua Dong, University of Science and Technology of China, China
Title: Non-reciprocity in a multi-mode optomechanical microresonator
Biography: Chunhua Dong received a B. S. and Ph. D. from University of Science and Technology of China (USTC) in 2006 and 2011, respectively. He had been as an exchange student in Washington University in St. Louis during 2008. He worked as a postdoctoral researcher in university of Oregon for 2 years. Since 2013, he has worked in key lab of quantum information of USTC. He is currently interested in application for whispering gallery mode, cavity optomechanics and frequency comb.
Abstract: This talk will present the non-reciprocity in the high-Q whispering gallery modes microresonator. The non-reciprocity has many applications for photonic isolators and circulators, which have been recently demonstrated in our experiment. A reconfigurable non-reciprocal device with alternative functions as either a circulator or a directional amplifier via optomechanically induced coherent photon-phonon conversion or gain was demonstrated. The underlying mechanism of the non-reciprocity demonstrated here is actually universal and can be generalized to any traveling wave resonators with a mechanical oscillator, such as the integrated disk-type microresonator coupled with a nanobeam. In addition, I will present some new results about the multi-modes interaction in the mechanical system for the non-reciprocity.
43 References: [1] M. Hafezi, and P. Rabl, Opt. Express 20, 7672 (2012). [2] Dong, C.-H., et al. Nature Commun. 6, 6193 (2015). [3] Z. Shen, Y. Zhang, Y. Chen, et al, Nat. Photon. 10 , 657 (2016). [4] F. Ruesink, M. Miri, A. Alù and E. Verhagen, Nature Communications 7, 13662 (2016). [5] Z. Shen, Y.-L. Zhang, Y. Chen, et al, Nature Communications 9, 1797 (2018). [6] Kim, J., Kuzyk, M. C., Han, K., Wang, H. & Bahl, G. Nat. Phys. 11, 275–280 (2015). [7] K. Fang, J. Luo, A. Metelmann, M. H Matheny, F. Marquardt, A. A Clerk, O. Painter, Nat. Phys. 13 , 465 (2017).
14:20-14:40 Jin Liu, Sun Yat-sen University, China
Title: High-Q bound States in the continuum based on all dielectric metasurfaces
Abstract: High-Q resonance are universal resources across different branches of physics, e.g., in acoustics, electronics, and electromagnetics, etc. In the past decades, high-Q resonant modes of micro-resonators are one of the important research fields in nanophotonics, such as whispering gallery mode and Fabry-Pérot resonant mode, and defect mode of photon crystals, etc [1]. Recently, bound states in the continuum (BICs) has become an enabling platform for realizing high-Q resonance. BICs possess infinite lifetime (an infinite quality factor) in the ideal case, even though they are in the continuum spectrum of radiating modes that can couple to free space [2]. Therefore, it is highly attractive to employ the BICs for exploring the nonlinear optical processes in nanoscale with light coupling from space. In this talk, I will present the realizations of high-Q quasi-BIC modes in all-dielectric metasurfaces by introducing asymmetry in the unit cells *3+. We’ve achieved quasi-BIC modes in telecom band with a record-Q factor close to 20,000 under the normal excitation condition. By tuning pico-second pulsed into the BIC resonance, highly efficient third harmonic generation and even pronounced second harmonic generation which is usually in absence in silicon are simultaneously achieved. Our devices may immediately boost the performances of BICs in a plethora of fundamental research and device applications, e.g., cavity QED, biosensing, nanolasing, and quantum light generations.
Fig.1 High-Q bound States in the continuum based on all dielectric metasurfaces
References [1] K. Vahala, Optical microcavities. Nature 424, 839 (2003). [2] C. W. Hsu et al., Bound states in the continuum. Nat. Rev. Mater. 1, 16048 (2016). [3] Z. Liu, et al., High-q quasibound states in the continuum for nonlinear metasurfaces. Phys. Rev. Lett. 123, 253901 (2019).
44 14:40-15:00 Qing Zhang, Peking University, China
Title: Exciton Polariton and Micro/nano-Lasing of Lead-Halide Perovskite Semiconductors Biography: Zhang Qing, received B.S. degree from Department of Materials Science and Engineering in University of Science and Technology of China (USTC) in 2005, got Ph.D. degree from Department of Physics in Tsinghua University (TSU) in 2011 (supervisor: Prof. Qikun Xue). From 2011-2016, she worked as post-doctoral research fellow in Nanyang Technological University (NTU, supervisor: Prof. Qihua Xiong). In 2016, she joined in Department of Materials Science and Engineering, College of Engineering, Peking University (PKU) as a principle investigator and assistant professor. At present, she is interested in light-matter interaction and optical spectroscopy of low-dimensional semiconductors as well as its applications in micro/nanolasing devices. In recent years, she has listed as co-authors in more than 90 peer-reviewed papers including Nature Photonics, Nature Communications, Physical Review Letters, Advanced Materials and Nano Letters. She obtained Chinese Chemical Society-Wiley Young Scientist Award of Nanochemistry in 2018 and National High-level Young Talents Scholar in 2016. She is a member of Youth Working Committee on Chinese Materials Society.
Abstract: Lead halide perovskite semiconductors have recently emerged as promising gain media for low-cost, solution-processable light sources including laser, light emitting diode, single photon sources and so on. Especially, the large exciton binding energy in the visible and near-infrared spectral range opens new avenues for the development of excitonic and exciton-polariton devices. Herein, I will discuss recent progresses on the exciton polariton effect of low dimensional, single-crystal perovskites as well as its enhanced high-performance micro/nano-lasers.
References [1] Q. Y. Shang,, M. L. Li, L. Y. Zhao, D. W. Chen, S. Zhang, S. L. Chen, P. Gao, C. Shen, J. Xing, G. C. Xing, B. Shen, X. f. Liu, and Q. Zhang*, Nano Lett. 10.1021/acs.nanolett.0c02462 [2] Q. Y. Shang, C. Li, S. Zhang, Y. Liang, Z. Liu, Q. Zhang*, Nano Lett. 20, 2, 1023-1032 (2020). [3] Y. Liang, Q. Y. Shang, Q. Wei, L. Y. Zhao, Z. Liu, J. Shi, Y. G. Zhong, J. Chen, Y. Gao, M. L. Li, X. F. Liu, G. C. Xing*, Q. Zhang*, Adv. Mater. 1903030 (2019) [4] Q. Y. Shang, S. Zhang, Z. Liu, J. Chen, P. F. Yang, C. Li, W. Li, Y. F. Zhang, Q. H. Xiong,* X. F. Liu,* and Q. Zhang*, Nano Lett., 18, 3335–3343 (2018)
15:00-15:20 Chaoyuan Jin, Zhejiang University, China
Title: In-situ Laser Interference for Nano-material Growth and Microcavity Photonic Devices
Abstract: Laser interference provides a powerful tool for the epitaxial growth of nanostructured materials and the mode manipulation of photonic devices. Here, we report the very recent progress made towards combining the technologies of molecular bean epitaxy (MBE) and laser interference patterning [1,2]. Pulsed laser interference is applied to a MBE chamber to achieve in-situ patterning during the growth of III-V materials. Towards the lower end of the energy range, we observe the formation of nano-islands of 2-3 monolayer height and diameter 50-100nm, which are consistent with a surface diffusion model induced by the transient photothermal gradient. The growth of InAs on such a surface results in nucleation of QDs solely at the island sites, with the number of QDs per site controlled by the island size and InAs deposition amount. We demonstrate highly ordered dense arrays of QDs over areas exceeding several 100μm2. Furthermore, we introduce the interference technology to the manipulation of photonic devices through the interplay with the vacuum field distribution in microcavity devices. We are able to demonstrate effective mode selection in micro-cavity lasers via laser interference [3] and cavity Q-factor control for novel device concepts [4,5].
45 References 1) Y.-R. Wang, I.-S. Han, C.-Y. Jin, and M. Hopkinson, ACS Appl. Nano. 3, 4739 (2020). 2) Y.-R. Wang, I.-S. Han, C.-Y. Jin, and M. Hopkinson, Appl. Phys. Lett. 116, 201901 (2020). 3) L.-F. Wang, Y.-R. Wang, H. Francis, M.-J. Xia, F. Liu, M. Hopkinson, and C.-Y. Jin, Opt. Expr. 28, 16486 (2020). 4) S. Chen, H. Francis, C.-H. Ho, K.-J. Che, Y.-R. Wang, M. Hopkinson, S.-Y. Zhang, and C.-Y. Jin, IET Optoelectron. 14, 100 (2020). 5) C.Y. Jin, R. Johne, M.Y. Swinkels, T.B. Hoang, L. Midolo, P.J. van Veldhoven, and A. Fiore, Nature Nanotech. 9, 886 (2014).
15:20-15:40 Yongheng Huo, University of Science and Technology of China, China
Title: High-performance Single & Entangled Photon Sources using MBE Grown III/V Semiconductor Quantum Dots
Biography: Yongheng Huo received his BS degree at Tianjin University in July, 2006 and PhD degree at the Institute of Semiconductors, CAS in January 2011. In February 2011 he started to work as a postdoctoral research associate in the Institute for Integrative Sciences, IFW Dresden with IFW Scholarship and in January 2013 he became responsible scientist of the MBE Lab in IFW. In April 2015 he joined JKU Linz as a senior researcher where he set up the III/V MBE lab with Prof. Armando Rastelli. In July 2016 he got his professorship in USTC. He has more than 10 years’ experience in material growth, device fabrication and related physics. His current research interests are developing novel quantum materials and devices including high performance quantum light sources, qubit-oriented superconducting films, single-crystal interference coatings for laser-based metrology etc. for the applications in quantum information technologies.
Abstract: High performance on-demand quantum light sources, including single photon sources and entangled photon sources are crucial in quantum information applications. Molecular beam epitaxy (MBE) grown semiconductor quantum dots (QDs) can in principle be ideal candidates to generate expected photons which can be used in quantum information technologies [1-3]. However, poor directional emission and internal reflection of photons of QDs in high refractive index materials etc. make the collection efficiency and thus brightness of QD photon sources lower. The generally existing fine structure splitting (FSS) also degrades the entanglement fidelity of photon pairs emitted by QDs. Here I will present the fabrication of ultra-symmetric GaAs QDs which can directly generate photon pairs with unprecedented high degree of entanglement fidelity [4-7]. I will also talk about how we have improved the photon collection efficiency by integrating QDs in novel cavities as elliptical micro pillar and circular Bragg gratings [8-9].
References: [1] C.-Y. Lu and J.-W Pan, Nat. Photon. 8, 174 (2014). [2] H. Wang, W. Li, X. Jiang, et al, Phys. Rev. Lett. 120, 230502 (2018) [3] J.P Li, J Qin, A. Chen, et al, ACS Photonics ACS Photonics 7, 1603 (2020). [4] Y. Huo, A. Rastelli, O. Schmidt, Appl. Phys. Lett. 102, 152105 (2013) [5] Y. Huo, B. Witek, S. Kumar et al, Nat. Phys. 10, 46 (2014) [6] Y. Huo, V. Krapek, A. Rastelli et al, Phys. Rev. B 95, 165304 (2017) [7] D. Huber, M. Reindl, Y.H. Huo et al, Nat. Commun. 8, 15506 (2017), Phys. Rev. Lett. 121, 033902 (2018) [8] H Wang, H Hu, TH Chung et al, Phys. Rev. Lett. 122, 113602 (2019). [9] YM He, H Wang, S Gerhardt et al, Nat. Photon 13, 770 (2019).
46 Session T5: High Power Laser Source, Fiber-based Devices and Applications Room A ID: 661 4324 8539 Chair: Prof. Zinan Wang, University of Electronic Science and Technology of China, China
16:00-16:20 Bo Guo, Harbin Engineering University, China
Title: Advances in 2D materials-based multi-wavelength ultrafast photonics
Biography: Bo Guo received his Ph.D. degree in physical electronics from Harbin Institute of Technology in 2015. Currently, he is an Associate Professor at the Key Lab of In-Fiber Integrated Optics of Ministry Education of China, Harbin Engineering University. His research interests include 2D materials optoelectronics, ultrafast photonics and Optical fiber sensing. He has authored 4 invited book chapter/review article and more than 20 international journal papers, including Laser Photon. Rev./Photon. Res./Opt. Express, 2 ESI highly cited papers, 2018 Editor-in-Chief Choice Award of Chin. Opt. Lett.. He has long been a peer reviewer for 30 international journal, such as Appl. Phys. Lett./Opt. Lett./Opt. Express.
Abstract: Multi-wavelength ultrafast photonics plays an important role in a variety of applications ranging from optical communications to medical diagnostics and optical sensing. Two-dimensional (2D) materials, including graphene, topological insulators, and phosphorene, have witnessed a very fast development of both fundamental and practical aspects in ultrafast photonics since 2009. Their unique nonlinear optical properties enable them to be used as excellent saturable absorbers with fast responses and broadband operation and can be easily integrated into lasers. Here, we review the recent advances in the exploitation of these 2D materials in multi-wavelength ultrafast lasers. Interestingly, study found that, 2D materials-based nonlinear optical device is an ideal platform for nonlinear pulse dynamics study. Finally, current challenges and future application opportunities of 2D materials-based multi-wavelength ultrafast lasers are presented.
16:20-16:40 Jian Wu, National University of Defense Technology, China
Title: Yb-doped fiber laser with Black phosphorus: versatility in spatial/temporal domain
Biography: Jian Wu received the B.S. degree in physics from Central China Normal University, Wuhan, China and Ph.D. degree in optics from Shanghai Jiao Tong University, Shanghai, China, in 2006 and 2015, respectively. He is currently a associate professor at the College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China. His current research interests include fiber laser technology, analytical chemistry, and plasma physics.
Abstract: Since early 2014, black phosphorus (BP), a rising star among post-graphene and transition metal dichalcogenides (TMDs) two-dimensional (2D) nanomaterials, has been exploited to generate ultrashort pulses in ultrafast laser systems. Owing to its unique optical characteristics with relatively large direct bandgap range from 0.3 eV (bulk, corresponding to 4.13 μm) to 2 eV (monolayer, corresponding to 620 nm), BP fills the gap between the graphene and the wide-bandgap TMDs, which enables ultrashort pulse generation from near-infrared to visible waveband. However, the out-of-plane orthorhombic ridges structure of BP would easily lead to the degradation under ambient conditions, which limits its practical application in optoelectronic and photonic devices. In this work, to avoid the degradation and achieve long-term operation, different from the previous passivation procedures, a modified electrochemical delamination strategy exfoliation process has been employed to produce high-quality large-size and oxidation-resistance BP nanoflakes, which are then used as the saturable absorbers (SA) for the ultrafast pulse generation in an Yb-doped fiber laser. In addition, our recent progress of Yb-doped fiber lasers with BP nanostructures extends to the spatial/temporal domain. The explorations on BP would become a more remarkable and exciting research area, and could offer the unlimited potential for further applications in photonics and
47 electromagnetics.
16:40-17:00 Dapeng Zhou, Dalian University of Technology, China
Title: Computational Brillouin Optical Time-Domain Analysis via Compressed Sensing and Ghost Imaging
Biography: Dr. Dapeng Zhou is a professor at Dalian University of Technology in Dalian, Liaoning, China. He obtained his PhD degree (2011) from the University of Waterloo in Waterloo, Ontario, Canada. After his graduation, Dr. Zhou worked as a postdoctoral fellow for two years at the University of Ottawa in Ottawa, Ontario, Canada. Then, he worked as a research scientist in fiber-optic industry in Canada for 5 years before joining School of Physics as a faculty member at Dalian University of Technology in 2017. Dr. Zhou is interested in the research in the field of nonlinear fiber optics, particularly focusing on research and development of optical fiber sensors and fiber lasers.
Abstract: Distributed fiber-optic sensors measure a spatially distributed profile of environmental quantities such as temperature, strain, pressure, etc., by detecting and analyzing specific optical effects along optical fibers. This distributed-measurement capability offers unique advantage compared to conventional discrete sensing techniques, especially for the fact that sensing systems are able to achieve long-distance measurement range with a single unaltered optical fiber as the sensing element. Brillouin optical time-domain analysis (BOTDA) has been proven to be one of the most popular distributed sensing techniques which are able to measure temperature and strain in a distributed manner. The major advantage of the BOTDA technique is its long range measurement capability, and over 100 km measurement range has been achieved. However, it takes considerable amount of time to acquire distributed Brillouin spectra since it is required to scan over a wide frequency range step by step to cover sufficient temperature/strain measurement range (~1MHz/oC and ~1MHz/20με), and at each frequency step, it normally needs to average a large number of time-domain traces to achieve decent SNR of the Brillouin spectra. Also, conventional BOTDA relies on fast speed analog-to-digital converter with the sampling rate required to meet Nyquist-Shannon sampling theorem in order to keep the integrity of the signal for resolving detailed spatial information. Here, we propose a computational BOTDA based on compressed sensing technique in the frequency domain to acquire far fewer frequency components and ghost imaging technique in the time domain to reduce the sampling rate of the data acquisition system significantly. We demonstrate experimentally that the amount of frequency acquisitions needed is only 30% of those required by a conventional BOTDA with 1 MHz frequency increment in the acquisition process to obtain Brillouin spectra along an optical fiber, and at the same time the sampling rate can be reduced by over 3 orders of magnitude compared with the conventional system.
17:00-17:20 Jiangming Xu, National University of Defense Technology, China
Title: Novel pump source enabled performance exploration of high power random fiber laser
Biography: Jiangming Xu is currently an Research Associate at the College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China. His current researches mainly focus on the Performance Exploration of High Power All-fiberized Incoherent Sources, including random fiber laser (RFL) and superfluorescent fiber source (SFS), from low power level photonic device to powerful and bright fiber source. Currently he has published more than 50 SCI papers in Photonics Research, IEEE Journal of Selected Topics in Quantum Electronics, Optics Letters, Optics Express, etc. Furthermore, he has given 17 conference reports, including 3 Postdeadline presentations and 5 invited talks. He was nominated the 2018 excellent doctoral dissertations in optics from Chinese Optical Society. He received many academic awards including Young Scientist Award of IEEE the 18th International Conference on Optical Communications and Networks, Wang Daheng Optical Award (student award) of Chinese Optical Society and Technical Innovation Award of Chinese Society for Optical Engineering.
48 Abstract: High power random fiber laser, whose operation is based on unique random distributed feedback, has many remarkable features, such as cavity-free, mode-free, and structural simplicity, and has attracted a great deal of attention in recent years for the potential application in frequency doubling, mid-infrared laser pumping, and supercontinuum generation. In this talk, we will review the progresses in the field of high power random fiber laser. The recent achievements concerning performance exploration of high power random fiber laser in our group enabled by flexible novel pump source employment, including spectral purity improvement, power scaling potential development, multi-wavelength operation, wavelength and linewidth tunability, will also be introduced.
17:20-17:40 Weili Zhang, University of Electronic Science and Technology of China, China
Title: Control and imaging application of fiber random lasers
Biography: Weili Zhang received B.Eng. and Ph.D. degrees in communication engineering from Southwest Jiaotong University, China, in 2003 and 2008, respectively. From 09/2008 to 10/2010, he was working as a research fellow in School of EEE, Nanyang Technological University, Singapore. From 09/2016 to 09/2017, he was working as a visiting scholar in Niels Bohr Institute, Copenhagen University, Demark. He began to work in University of Electronic Science and Technology of China as an associated professor since November 2010, and as a professor since 2016. His research interests include random and chaos lasers, microcavity lasers, and surface-plasmon physics. He has authored/coauthored over 100 papers published in refereed professional journals and national and international conferences and he filled 10 patents, his paper gained 2000+ citations, and his H-index is 29. His doctoral dissertation was awarded the nomination award of "National Excellent Doctoral Dissertation of China". Dr. Zhang was in the editorial board committee of Optical and Quantum Electronics and is in the editorial board committee of Photonics Sensors.
Abstract: Weili Zhang received B.Eng. and Ph.D. degrees in communication engineering from Southwest Jiaotong University, China, in 2003 and 2008, respectively. From 09/2008 to 10/2010, he was working as a research fellow in School of EEE, Nanyang Technological University, Singapore. From 09/2016 to 09/2017, he was working as a visiting scholar in Niels Bohr Institute, Copenhagen University, Demark. He began to work in University of Electronic Science and Technology of China as an associated professor since November 2010, and as a professor since 2016. His research interests include random and chaos lasers, microcavity lasers, and surface-plasmon physics. He has authored/coauthored over 100 papers published in refereed professional journals and national and international conferences and he filled 10 patents, his paper gained 2000+ citations, and his H-index is 29. His doctoral dissertation was awarded the nomination award of "National Excellent Doctoral Dissertation of China". Dr. Zhang was in the editorial board committee of Optical and Quantum Electronics and is in the editorial board committee of Photonics Sensors.
17:40-18:00 Baoquan Jin, Taiyuan University of Technology, China
Title: Parallel Signal Processing for Distributed Optical Fiber Sensors
Abstract: Parallel signal processing is a particularly competitive method which is suitable for distributed optical fiber sensors because of its ability of high-speed digital signal processing and analysis. We propose three parallel signal processing methods for the distributed optical fiber sensors based on the backscattering effect of sensing laser. Firstly, a graphics processing units (GPU)-based vibration demodulation and analysis method is designed to process large amounts of sensing data in parallel to increase the speed of differential accumulation processing and fast Fourier transform (FFT) analysis in phase-sensitive optical time-domain reflectometry (Φ-OTDR) sensing system. The Field Programmable Gate Array (FPGA) technology is also used to complete fast data acquisition and transmission at the same time. Secondly, the fast demodulation algorithm
49 for Brillouin optical time-domain reflectometry (BOTDR) sensing system is studied and a GPU-based short-time Fourier transform (STFT) fast parallel algorithm is designed. By collecting multiple time-domain signals and segmenting according to the size of the window function, it is expanded into a time-frequency matrix according to the number of FFT segments and sends them to the GPU memory for large-scale parallel processing. Thirdly, the demodulated temperature signal in Raman optical time-domain reflectometry (ROTDR) sensing system contains a large amount of white noise, which is seriously affects the temperature measurement accuracy. In processing system, every backscattering curve data is transmitted to the arithmetic unit in the GPU for cumulative average processing, and corresponding threads are used for arithmetic processing. Because the amount of data gradually increases in actual distributed optical fiber sensors, real-time performance could be greatly improved by parallel signal processing methods, which can provide more solutions for engineering applications.
18:00-18:20 Fuxing Gu, University of Shanghai for Science and Technology, China
Title: Semiconductor monolayers on optical micro/nanofibers for low threshold lasing
Biography: Fuxing Gu received his B.S. degree in 2006 and Ph.D. degree in 2012 from Zhejiang University. He is currently an associate professor of the Laboratory of Integrated Opto-Mechanics and Electronics (http://iome.usst.edu.cn/), University of Shanghai for Science and Technology, China. His research interests include micro/nanofiber optics and opto-mechanics, microcavity and 2D-material optics. For example, he has proposed the theory of silicon-oxygen bond activation energy that generates dangling bonds on micro/nanofibers, developed a movable evaporated source to tune the bandgap of semiconductor nanowires in a wide range, a suspended near-field coupling technique in nanowires, and periodical spatially modulating the gain in microcavities. Moreover, he has realized polymer and metal nanowire sensors with ultrahigh sensitivity, fast response and low power consumption, low-threshold single-mode lasers in polymer microbottle cavities, and room-temperature semiconductor monolayer exciton lasers. He has published a total of 42 SCI indexed papers, such as Science、Sci. Adv.、Light: Sci. & Appl.、J. Am. Chem. Soc.、Nano Lett. etc., in which have received a total of over 1600 citations.
Abstract: One of the obstacles towards efficient light sources using monolayer transition metal dichalcogenides (TMDs) is the low room-temperature photoluminescence quantum yields especially under high excitation condition, which limit their applications, in particular, in lasers and amplifiers. This has forced researchers to use high quality-factor optical microcavities to achieve lasing action. Indeed, all the recently demonstrated monolayer-enabled lasers *1−3+ are based on such microcavities, which require complex microfabrication and sample transfer processes. Here we directly grow single-crystal monolayer TMDs on tapered silica optical micro/nanofibers, and demonstrate greatly enhanced room-temperature photoluminescence quantum yields of monolayer TMDs using a simple photoactivation method [4]. Compared with the planar samples, our photoactivated monolayer MoS2 on silica micro/nanofibers exhibit enhanced quantum yields by more than two orders of magnitude, which range from ~30% to 1% as the pump intensity increases from 10−1 to 104 W cm−2. Under high excitation condition, our quantum yields are over an order of magnitude higher than previous reports [5]. This allows direct realization of continuous-wave lasing in microfiber-based microcavities, with greatly reduced thresholds down to 5 W cm−2. Our work can be widely applied to other monolayer TMDs on silica substrates, and offers new avenues by using standard optical fiber systems to explore two-dimensional materials for various applications ranging from coherent light sources and nonlinear optics to optoelectronics.
References [1] S. Wu, S. Buckley, J. R. Schaibley, L. Feng, J. Yan, D. G. Mandrus, F. Hatami, W. Yao, J. Vuckovic, A. Majumdar and X. Xu, Nature Vol. 520 (2015), p. 69–72. [2] Y. Ye, Z. J. Wong, X. Lu, X. Ni, H. Zhu, X. Chen, Y. Wang and X. Zhang, Nat. Photonics Vol. 9 (2015), p. 733–737. [3] Y. Li, J. Zhang, D. Huang, H. Sun, F. Fan, J. Feng, Z. Wang and C. Z. Ning, Nat. Nanotechnol. Vol. 12 (2017), p. 987–992. [4] F. Liao, J. Yu, Z. Gu, Z. Yang, T. Hasan, S. Linghu, J. Peng, W. Fang, S. Zhuang, M. Gu and F. Gu, Sci. Adv. Vol. 5 (2019), p.
50 eaax7398. [5] M. Amani, D.-H. Lien, D. Kiriya, J. Xiao, A. Azcatl, J. Noh, S. R. Madhvapathy, R. Addou, K. C. Santosh, M. Dubey, K. Cho, R. M. Wallace, S.-C. Lee, J.-H. He, J. W. Ager III, X. Zhang, E. Yablonovitch and A. Javey, Science Vol. 350 (2015), p. 1065–1068.
51 Session T6: Quantum Information and Related Quantum Technologies Room B ID: 613 2916 2069 Chair: Prof. Yin Cai, Xi’an Jiaotong University, China
16:00-16:20 Qiongyi He, Peking University, China
Title: Versatile Multipartite Einstein-Podolsky-Rosen Steering via a Quantum Frequency Comb
Biography: Qiong-Yi He received her B.S. degree from Northeast Normal University in 2002 and Ph.D. degree from Jilin University in 2007. She was a postdoctoral fellow in the University of Queensland and Swinburne University in Australia. In 2012 she joined Peking University with ‘‘Talent-100” Professor and has been tenured since 2018. Her main research interests focus on the field of the fundamental issues in quantum physics: squeezing, entanglement, EPR non-locality, etc., and the criteria for detecting multipartite quantum correlations and its applications in quantum information processing.
Abstract: Multipartite Einstein-Podolsky-Rosen steering [1] is an essential resource for quantum communication networks where the reliability of the equipment at all of the nodes cannot be fully trusted [2,3]. Here, we present the experimental generation of a highly versatile and flexible repository of multipartite steering using an optical frequency comb and ultrafast pulse shaping [4]. Simply modulating the optical spectral resolution of the detection system using the pulse shaper, this scheme is able to produce on-demand 4-, 8-, and 16-mode Gaussian steering without changing the photonics architecture. We find that the steerability increases with a higher spectral resolution. For the 16-mode state, we identify as many as 65 534 possible bipartition steering states existing in this intrinsic multimode quantum resource, and demonstrate that the prepared state steerability is robust to mode losses. Moreover, we verify four types of monogamy relations of Gaussian steering and demonstrate the constraint imposed by one of them to be strongly lifted. Our method offers a powerful foundation for constructing quantum networks in real-world scenarios.
References [1] Q. Y. He and M. D. Reid, Phys. Rev. Lett. 111, 250403 (2013). [2] S. Armstrong, M.Wang, R. Y. Teh, Q. H. Gong, Q. Y. He, J. Janousek, H. A. Bachor, M. D. Reid, and P. K. Lam, Nat. Phys. 11, 167-172 (2015). [3] X. W. Deng, Y. Xiang, C. Tian, G. Adesso, Q. Y. He, Q. H. Gong, X. L. Su, C. D. Xie, and K. C. Peng, Phys. Rev. Lett. 118, 230501 (2017). [4] Yin Cai, Yu Xiang, Yang Liu, Qiongyi He, and Nicolas Treps, Phys.Rev. Research, 00, 002000(R) (2020).
16:20-16:40 Jietai Jing, East China Normal University, China
Title: Quantum Light Source based on Atomic Ensemble
Biography: Prof. Jietai Jing is professor at East China Normal University in Shanghai, China. His main research field is quantum optics, especially the generation of quantum light sources, including quantum entanglement, and their application in quantum information and metrology. He has worked in this field since his PhD study in 1999 and has published more than 70 papers in peer-reviewed journals, including Nature Communications and Physical Review Letters. He got his PhD in Shanxi University in 2004 for generating tripartite entanglement in continuous variable regime and then he did postdoctoral research on generating entanglement from optical parametric oscillator above threshold at University of Virginia from 2004 to 2006. Then he moved to University of Maryland for postdoctoral research on studying entanglement from cavity QED system from 2006 to 2008. In 2008, he got a professorship at East China Normal University. Since working independently, he has made great achievements in the experimental studies of quantum information and metrology with four-wave mixing processes in atomic ensemble. His group has constructed a series of novel quantum light sources,
52 including orbital angular momentum multiplexed continuous variable bipartite entanglement, tripartite entanglement, reconfigurable hexapartite entanglement, interference induced quantum correlation enhancement and multi-beam quantum correlation. Recently, His group has realized high-capacity multi-channel deterministic quantum teleportation protocol by using orbital angular momentum multiplexed entanglement. These series of experimental results have important application prospects and values in quantum communication and quantum precision measurement. He has been recognized by a number of awards, including New Century Excellent Talents of Ministry of Education of China, Shanghai Oriental Scholar, Shuguang Scholar and Pujiang Scholar. He has been selected as senior member of OSA.
Abstract: Quantum light sources, including quantum entanglement and quantum correlation, have attracted great attention due to their important roles in fundamental quantum physics science and quantum information processing. In this talk, I will review our recent experimental progresses on the generation and application of quantum light sources based on atomic ensemble. We have constructed a series of novel quantum light sources, including orbital angular momentum multiplexed continuous variable bipartite entanglement [1], tripartite entanglement [2], reconfigurable hexapartite entanglement [3], interference induced quantum correlation enhancement [4] and multi-beam quantum correlation [5]. Recently, we have realized high-capacity multi-channel deterministic quantum teleportation protocol by using orbital angular momentum multiplexed bipartite entanglement [6]. Our series of experimental results have important application prospects and values in quantum communication and quantum precision measurement. [1]X. Pan, S. Yu, Y. Zhou, K. Zhang, K. Zhang, S. Lv, S. Li, W. Wang, and J. Jing*, Physical Review Letters 123, 070506 (2019) [2]S. Li, X. Pan, Y. Ren, H. Liu, S. Yu, and J. Jing*, Physical Review Letters 124, 083605 (2020) [3]K. Zhang, W. Wang, S. Liu, X. Pan, J. Du, Y. Lou, S. Yu, S. Lv, N. Treps*, C. Fabre*, and J. Jing*, Physical Review Letters 124, 090501 (2020) [4]S. Liu, Y. Lou, and J. Jing*, Physical Review Letters 123, 113602 (2019) [5]Z. Qin, L. Cao, H. Wang, A. M. Marino, W. Zhang, and J. Jing*, Physical Review Letters 113, 023602 (2014) [6] S. Liu, Y. Lou, and J. Jing*, Nature Communications 11, 3875 (2020)
16:40-17:00 Qiang Zhou, University of Electronic Science and Technology of China, China
Title: Towards a High-Performance Teleportation System for Quantum Internet
Biography: Dr. Qiang Zhou is a professor at the University of Electronic Science and Technology of China. His research interests are in quantum information technologies, quantum internet, light-matter interface, integrated quantum devices, nonlinear optics, nano-photonics and quantum photonics. He received the B.S. degree from University of Electronic Science and Technology of China in Optoelectronic Information Science and Technology and the Ph.D. degree from Tsinghua University in Electronic Science and Technology. He was awarded the Tsinghua outstanding doctoral thesis prize for his work in fibre based quantum light source in 2011. He has authored more than 40 papers in referred journals and presented more than 10 talks in international conferences. Currently, he is a principal investigator for National Key R&D Program of China (No. 2018YFA0307400).
Abstract: Quantum teleportation plays a key role in long distance quantum communication [1-3]. Currently, the distance, fidelity, and rate of quantum teleportation system cannot meet requirements of quantum communication. Here, we report a quantum teleportation system compatible with fiber communication system, in which the quantum information encoded on a single-photon at 1549 nm is teleported to a photon at 1531 nm with an equivalent teleportation distance of 50 km. The average fidelity of our system is over 85% with a teleportation rate of 10 Hz. Furthermore, our system is compatible
References [1] R. Valivarthi, M.-G. Puigibert, Q. Zhou, et al., Nat. Photon. 10, 676-680, 2016.
53 [2] Q.-C. Sun, Y. Mao, S. Chen, et al., Nat. Photon. 10, 671-675, 2016. [3] R. Valivarthi, S. Davis, C. Pena, et al., arXiv:2007.11157, 2020. [4] E. Saglamyurek, M.-G. Puigibert, Q. Zhou, et al., Nature Communications 11202, 2016.
17:00-17:20 Zhaoyang Zhang, Xi'an Jiaotong University, China
Title: Coherent control on novel dynamic behaviors of light in electromagnetically induced photonic lattices
Biography: Zhaoyang Zhang is an Associate Professor in the School of Electronic Science and Engineering, Xi’an Jiaotong University, China. He has been engaged in the research of atomic physics, quantum optics, nonlinear optics, and optical properties of microstructures based on atomic coherence in multi-level systems. Recently, he mainly works on novel dynamics of light in photonic lattice based on atomic coherence in atomic vapors.
Abstract: Solid-state quantum emitters, especially epitaxial quantum dots (QDs) with large optical oscillator strength, are a promising candidate for future on-chip quantum devices. However, the deterministic creation and eventual scalability of single QD devices greatly suffer from the random nature of the QD positions produced in their self-assembled growth. In this talk, I will present a new high-performance system for nanoscale location of QDs based on photoluminescence imaging[1]. By further utilizing such a system, we’ve achieved deterministic couplings between single QDs and a variety of photonic nanostructures, which enables the realizations of quantum photonic devices with state-of-the-art performances, including ultra-bright single-photon/entangled pair sources[2.3], hybrid quantum photonic circuits[4] and single-photon frequency converters[5]. [1] J. Liu*, M. Davanco*, L. Sapienza, K. Konthasinghe, J. V. D. M. Cardoso, J. D. Song, A. Badolato and K. Srinivasan*, “Cryogenic photoluminescence imaging system for nanoscale positioning of single quantum emitters”, Rev. Sci. Instrum. 88, 023116 (2017). [2]. Y. M. He, J. Liu*, S. Maier, M. Emmerling, S. Gerhardt, M. Davanco, K. Srinivasan, C. Schneider and S. Höfling, “Deterministic implementation of a bright, on-demand single photon source with near-unity indistinguishability via quantum dot imaging”, Optica 4 802 (2017). [3]. M. Davanco*, J. Liu*, L. Sapienza, C. Z. Zhang, J. V. D. M. Cardoso, V. Verma, R. Mirin, S. W. Nam, L. Liu and K. Srinivasan*, “A heterogeneous III-V/silicon integration platform for on-chip quantum photonic circuits with single quantum dot devices”, Nature Commun. 8 889 (2017). [4]. J. Liu et al., "A solid-state source of strongly entangled photon pairs with high brightness and indistinguishability", Nature Nano. (2019). [5]. A, Singh, Q. Li, S. F. Liu, Y, Yu, X. Y. Lu, C. Schneider, S, Hoefling, J. Lawall, V. Verma, R. Mirin, S. W. Nam, J. Liu* and K. Srinivasan* “Quantum frequency conversion of a quantum dot single-photon source on a nanophotonic chip”, Optica 6 563 (2019)
17:20-17:40 Ruifang Dong, National Time Service Center, CAS, China
Title: Nonlocal dispersion cancellation characterization of frequency entanglement and its application in nonlocality test
Biography: Dong Ruifang, received the B. Eng. In Opto-electronics and M.S. in Optics from Shanxi University, China in 1998 and 2001, and the Ph.D. degree in Physics from Friedrich-Alexander- University of Erlangen-Nuremberg, Germany in 2009. respectively. From 2009 to 2010, she worked as postdoctoral researcher in Max Planck Institute for the Science of Light, Erlangen, Germany, and then Technical University of Denmark. Since 2011, she joined NTSC as a Professor. In recent years, she has published more than 50 SCI academic papers in Nature Physics, Physical Review Letters, Physical Review A, New Journal of Physics, Optics Letters, Optics Express and other journals. She was selected the national youth talent support
54 program of China in 2012. At present, she is mainly engaged in the research area of Quantum enhanced time-frequency transfer, and precision measurement physics.
Abstract: Energy-time entangled biphoton source plays a great role in quantum communication, quantum metrology and quantum cryptography due to its strong temporal correlation and capability of nonlocal dispersion cancellation. As a quantum effect of the energy-time entangled biphotons, nonlocal dispersion cancellation is further proposed an alternative way for nonlocality test of continuous variable entanglement. In this presentation, we will demonstrate our recent experimental realization of a picosecond-level nonlocal dispersion cancellation (NDC), which is for the first time demonstration of the violation of Wasak’s inequality for the nonlocal feature of energy-time entanglement with a nonlocal detection method over 60-km fibers at telecom wavelengths. This work provides feasibility for the strict test of the nonlocality for continuous variables in both long-distance communication fiber channel and free space. Furthermore, we also discuss the fundamental limit on the achievable dispersion cancellation by the two-photon spectral correlation width of the paired photons, which can be characterized and manipulated directly from the photon pair generation process. This study provides an easily accessible tool for assessing and optimizing the NDC in various quantum information applications.
17:40-18:00 Kun Huang, East China Normal University, China
Title: Mid-infrared photon-number-resolving detection based on frequency upconversion
Biography: Dr. Kun Huang, professor in East China Normal University. He received PhDs from École Normale Supérieure - Paris and East China Normal University in 2015, then did post-doctoral research in Pierre-and-Marie-Curie University. He has published more than 45 academic research papers in peer-reviewed journals such as Nature Photonics, Nature Communications, Physical Review Letters, and Optica. His current research interests include single-photon detection, quantum state preparation, fiber lasers, mid-infrared generation and frequency-comb spectroscopy.
Abstract: Sensitive mid-infrared detection is greatly demanded in a variety of applications, such as biomedical imaging, remote sensing, trace spectroscopy, and free-space communication. Particularly, single-photon-resolving capability would dramatically improve the detection sensitivity, working distance or imaging functionality. Along with other techniques, frequency upconversion detection has drawn increasing intention in recent years. The upconversion detector nonlinearly converted infrared signal photons into the visible spectral region where high-performance silicon avalanche photodiodes could be used, thus favoring high sensitivity, high timing resolution, and low noise. In this talk, I will present our recent work on the mid-infrared upconversion detection based on a coincidence-pumping scheme. In the experiment, internal conversion efficiency up to 80% was achieved, which permitted a record-high overall detection efficiency of 38%. In parallel, a low noise equivalent power of 2×10−17 W/Hz1/2 was obtained due to the effective noise suppression. Furthermore, in combination with a multi-pixel photon counter, we have demonstrated, for the first time to the best of our knowledge, photon-number-resolving detection at mid-infrared region. A maximal resolving photon number up to 7 was realized in our experiment, which would lead to a substantial improvement on the detector dynamic range.
55 Oral Presentation Abstract
August 25th GMT+8 Session 1: Data and Information Engineering Research on Computer Aided Detection and Segmentation of Pulmonary Nodules Based on Deep Learning and Generative Adversarial Networks Ziming Wang, Jingxiang Sun, Siyi Yang and Yuzhuo Cheng Northeastern University, China
Pulmonary tuberculosis assisted diagnosis technology mainly faces the problems of poor resistance to overfitting due to the small training dataset and the low accuracy of lung tissue interference detection. This N098 paper mainly solves the current problems from two aspects. First, this paper uses the RetinaNet[1] network structure combined with the DenseNet[2] feature extraction network to perform image detection on lung CT targets. Second, this paper enhance the training dataset by increasing the size of the dataset with the method of generative adversarial network to reduce the phenomena such as overfitting in experimental results. After testing on the existing dataset, it was found that the accuracy rate of target detection based on the improved model is 87.32%, which is 70.1% on the original model. Besides, the accuracy rate can be increased to 90.1% by the enhancement of the dataset using generative adversarial network. Sparse Support Vector Machine for Network Behavior Anomaly Detection Mengxue Deng, Xinrong Wu, Peilun Feng and Weijun Zeng Army Engineering University of PLA, China
Network behavior anomaly detection (NBAD) re- quire fast mechanisms for learning from the largescale data. However, the training velocity of general machine learning approach is largely limited by the adopted training N123 weights of all features in the NBAD. In this paper, we notice, however, that the related weights matching of NBAD features is sparse, which is not necessary for holding all weights. Hence, in this paper, we consider an
efficient support vector machine (SVM) approach for NBAD by imposing 1 -norm. Essentially, we propose to use sparse SVM (S-SVM), where sparsity in model, i.e. in weights is used to interfere with special feature selection and that can achieve feature selection and classification efficiently. Oil Field Crude Oil Production Level Prediction Method Based on AHP-PSO-BP Hongtao Hu, Yingzi Pu and Xin Guan Xi’an Shiyou University
The crude oil production level is an important index to determine the degree of oil field development. There are many factors that affect the crude oil production level, and the amount of data is huge. The complicated relationships between the factor parameters bring great difficulties to the production level prediction. This paper presents a crude oil production level prediction model based on AHP-PSO-BP. When using the BP neural N140 network to predict crude oil production level, we first utilize AHP to select parameters with higher weights to optimize the BP network input, and then we use PSO algorithm to optimize the weights and thresholds of the BP network. With these two optimizations, we have improved the stability and prediction accuracy of the BP network. Experimental results show that when using the AHP-PSO-BP prediction model to predict the crude oil production level, the determination coefficient R2 we obtained from the model is 95.328%, which is better than the value we obtained from BP network model (82.356%), and GA-BP network model (70.509%). Besides, the AHP-PSO-BP prediction model convergence is faster, the prediction accuracy is higher and the network is more stable. Cooperative Cache Placement Algorithm for Arbitrary Topology in ICN Based on Particle Swarm Optimization N126 Siyang Shan, Chunyan Feng and Tiankui Zhang Beijing University of Posts and Telecommunications, China
56 As a network architecture suitable for content acquisition, Content Centric Networking (CCN) can effectively improve the efficiency of content distribution services and improve user service quality. The connection between nodes in the arbitrary topology does not follow specific rules, so it has great significance to find the optimal cache placement in arbitrary topology. In this paper, a cache placement algorithm in arbitrary topology in CCN is proposed. First, an optimization problem of cache placement for arbitrary topology is formulated, and the optimization objective is optimizing both user hop count and node load balance degree. Then we use particle swarm optimization algorithm to solve the problem of cache placement. Simulation results illustrated that our algorithm can reduce hop counts for content delivery and improve the load balancing level effectively. Research on Information Security of Large Enterprises Jia Liu SDIC Intelligence Co.,Ltd., China
With the rapid development of information technology, the construction of large enterprise information system has entered the fast lane from point to surface and from shallow to deep. Enterprises increasingly rely on information system to play a role in its strategic planning and management. Meanwhile, new technologies and applications such as Cloud Computing, Internet of Things, Big Data, Mobile Internet has been proposed and developed. With the advance of the Internet Plus era, some enterprise information security issues have N146 been discovered, and the security of information system has been challenged by complex network infrastructure, virus, and inefficient management, etc. Therefore, the security of enterprise information system has become an urgent problem for enterprises to solve. Based on several large enterprises as the research background, this paper describes current situation and challenge on large enterprise information system. To propose measures and solutions for the related problems, combined with our practical experience, we point out various information security issues and causes encountered by large group enterprises in the process of information system construction, operation and maintenance. Here, we propose a security strategy that combines security management with advanced technologies to address the above mentioned problems. Real-time Alert Project Based on Express Delivery Big Data Qien Li Chengdu Cisiondata Co., Ltd, China
Nowadays, “Internet plus express delivery” has become a popular way of committing drug-related crimes. It brings new challenges to the police in the fight against drug-related crimes with high elusiveness and strong anti-reconnaissance, which urges us to apply new technologies and methods in the anti-drug fight by grasping the crime characteristics and initiative. The State Post Bureau and Chengdu Cision Data Technology Co., Ltd. developed the Real-time Alert Project N3002-A (RTAP) based on express delivery big data, applying big data and AI technology, which solidly supports the police to pursuit and stop the web-based drug crimes. The RTAP analyzes logistic characteristics of drug-dealing in key border areas, abstracts data from oversea websites, models features of criminal behaviors, and performs social graph analysis of key personals. The project follows the route of “Mindset Analysis - Data Filtration - Crime Detection”, based on the combination of the police’s experiences and the company’s technologies. Methods applied in practice include personal targeting and global data analysis. So far, there is no competitive product in the industry either at home or abroad. This product is in a leading position both on the data’s source and collection volume.
57
Session 2: Intelligent Calculation and Application Multiple object tracking based on convolutional neural networks Chi Zhicheng, Li Dongsheng and Liu Han Chang'an University, China
In this paper, we develop a new multiple object tracking method by leveraging the power of deep neural networks. Our method extends the deep convolutional neural network into the spatiotemporal domain due to the great contribution of Long Short Term Memory(LSTM) network. Normally, in the multiple object N3003-A tracking tasks, it is difficult for the conventional algorithm like Kalman filter or particle filter to track the target through a long-time interval. Because of the deep neural networks can learn the deep appearance information of the object, the proposed tracking model is able to maintain the identity of the target during tracking. What's more, we compare the method with other state-of-the-art tracking approaches on challenging benchmark video tracking datasets. Experimental results and performance comparison proves that the CNN based tracking model can satisfy both accurate and robust requirements while maintaining low computational cost under the real road circumstance. Patent management evaluation of tobacco enterprises based on Grey Relational Analysis and Efficacy Coefficient Method Xiaojuan Wang and Hong Zhang China Tobacco Guizhou Industrial CO.,LTD, China
In order to solve the problem of evaluating the patent management level of tobacco enterprises, the paper first constructs the evaluation index system which affects the patent management level, and then uses the Grey Relational Analysis (GRA) method and Efficacy Coefficient Method to model the patent management level and the key factors influencing the evaluation level of a tobacco enterprise in 2009-2018. In the past ten years, the company’s patent management level is on the rise. The results show that the patent management level of the tobacco enterprises in 2017, 2016 and 2013 is the better one, however, the level of patent N120 management declined in 2014. Among them, patent application rate, patent technology value, some invention patent applications, patent market value, patent application cost and number of utility model patent applications has the most important influence on patent management level. The enterprise took the lead in the tobacco industry to centralize intellectual property rights under the management of the company's Law and Reform Department, and has established a series of management systems. It should rely on the comprehensive talents involved in professional technical, statistical and legal knowledge to fully focus on all aspects of the patent management process, set up a control mechanism, and focus on technological innovation, brand strategy and patents. Form a dynamic analysis and transformation mechanism, strengthen the ability to find innovation and development direction on the shoulder of “patent big data”, improve the patent management level of enterprises and continuously improve the comprehensive competitiveness of enterprises. Research on risk assessment technology of power monitoring system based on machine learning Bo Li, Ye Liang,. Hao Wang, Zhengwei Jiang and Xueqi Jin Beijing Kedong Electric Power Control System Co., Ltd., China
With the complexity of the power system and the increasingly severe network security environment, the N121 industry has urgently needed to improve the risk prediction ability of the power system security and the potential safety hazards brought about by the disposal. According to the experience and the features attributes of historical data, K-means unsupervised learning clustering is carried out. For supervised learning classification, this paper chooses SVM-KNN, and the risk assessment portrait after business disposal is constructed. After establishment and operation of the model, effective and rapid analysis and output of
58 disposal recommendations and corresponding risk levels are carried out, and the original experience is intellectualized and rationalized to the relevant people. In order to make sure the stable, efficient and safe operation of the power monitoring system, model could give prompt safety advice as an expert. Giant enhancement of forward stimulated Brillouin scattering in surface plasmon polaritons waveguide Yuan Xie, Tianye Huang and Perry Shum Ping China University of Geosciences (Wuhan),China
A partially suspended surface plasmon polaron waveguide that enhances forward stimulated Brillouin N107 scattering is proposed. The addition of silver sidewall allows the optical and sound waves to overlap more efficiently. The gain of SPP waveguide is predicted to be 2.2 × 106 W-1,m-1, which is more than 200 times that of pure silicon with the same waveguide size. In addition, the contribution of electrostrictive force and radiation pressure to the optical force is also analyzed. This simple and highly modulated waveguide can play an important role in the development of FSBS on integrated photon platform. A Service Composition Optimization Model Based on Petri Nets and Service Contracts Zhou Fang, Chao Ma, Jiaxing Qu, Xue Song and Chi Zhang Heilongjiang Province Cyberspace Research Center, China
With the increase of Web services on the Internet, the services available to users have also become diversified. How to quickly and accurately provide the appropriate services for users has become a research hotspot. Therefore, this paper proposes a service composition optimization method based on the extended N009 Petri net. This method realizes the automatic mapping from the user functional requirements to the service process of the abstract layer firstly. Secondly, the user's non-functional requirements constraints are labeled on the service process by means of the service contract semantics of the extended Petri net, and then the service composition optimization model is fully and accurately defined. At last, in order to efficiently solving the optimization model, the SC-oriented fuzzy matching algorithm and the SC-oriented service composition optimization genetic algorithm are designed. The proposed method can quickly and accurately provide the high-quality service solutions for users. Micro-grid oriented active demand response optimization scheme Anqin Luo, Jianan Yuan, Chao Huo and Yue Liu Beijing SmartChip Microelectronics Technology Company Limited, China
The grid-connected micro-grid with large scale has proposed higher requirements for grid Demand Response (DR). This paper introduces factors of micro-grid into the DR system and designs the structure of micro-grid N135 based on DR system, together with the modeling principle and method of micro-grid based on DR policy. On this basis, this paper proposes a micro-grid based on demand response optimization policy under both conditions of time-of-use price and real-time price. According to the characteristics of micro-grid based on DR system, situational evaluation is conducted by taking the DR system in someone area of Shanghai as an example. Simulation results show great efficiency of demand-response optimization policy proposed with both of the time-of-use price and the real-time price.
59 Session 3: Communication Principle and Technology Antenna Selection for Non-Orthogonal Multiple Access with Space Time Block Codes Guowei Lei and Sunqing Su Jimei University, China
Non-orthogonal multiple access (NOMA) has drawn much attention since the resources for wireless communications are getting scarce with the rapid growth of data traffic and multiple services. To enlarge the N006 capacity and combat the multi-path fading, the technique of multiple-input multiple-out (MIMO) is introduced into NOMA system. However, the superior performance comes at the price of expensive RF chains. Moreover, the computational complexity of AS should not be neglected. To this end, a novel AS algorithm is proposed to approach exhaustive search with less complexity. Furthermore, the general STBC design is introduced in MIMO-NOMA system, and the performances are evaluated in terms of the sum rate and outage probability. An Adaptive Power Allocation and Coding Scheme for Improving Achievable Rate of the Gaussian Interference Channel Zhonglong Wang, Liyuan Zhang and Meng Ma Peking University, China
The best coding scheme for Gaussian interference channel (GIC) is still an open problem so far, and has attracted much attention in the field of wireless communication due to it plays an important role in N102 combating co-channel interference. In this paper, an adaptive power allocation and coding scheme based on time sharing (TS) strategy is proposed for the two-user GIC to coordinate the interference and achieve a higher sum-rate. In the proposed scheme, the codewords are divided into some segments, and the power of each segment is jointly optimized for the two users to maximize the sum-rate. To solve the power allocation problem, a heuristic search algorithm based on the optimal path planning algorithm is proposed. Simulation results show that the proposed scheme can achieve a higher sum-rate compared with the conventional coding schemes. Resource Allocation in OFDMA Networks with Deep Reinforcement Learning Jiaxin Liu, Xiao Ma, Weijia Han and Liang Wang Shaanxi Normal University, China
In a distributed OFDMA network, wireless channel is divided into multiple time-frequency resource block for transmission. Because there is no information interaction between nodes in a distributed network, and independent resource allocation of each nodes will result in collisions. Reasonable allocation resources can effectively reduce the collision ratio and improve system throughput. For the distributed network, we propose a time-frequency resource allocation method based on deep reinforcement learning (DRL), with definition of N122 the state space, action space, and rewards. Each node uses this algorithm to realize time- frequency resource allocation. The nodes in the network use the this algorithm without information interaction between the other nodes. Different nodes have a preference for the occupation of resource blocks, which reduces the probability of collisions in resource allocation. When the traffic intensity fluctuates, we introduce the concept of virtual traffic, which improves the continuity of the node’s selection of resource blocks. This continuity reduces the impact of traffic fluctuations on the node’s decisions. Compared with the random access slotted-aloha protocol, simulation results show the network throughput has been significantly improved. When the traffic intensity remains constant or fluctuates, the throughput can approximate that of the centralized network. Robust Resource Division Multiplexing in Highly Time-varying Channels N138 Weijia Han, Xiao Ma, Chen Li and Di Tang Shaanxi Normal University, China
60 As applications of wireless communication fast increases in high mobility scenarios, it is highly required to supporting multiple information streams in a highly time-varying channel. To cope with this requirement, this paper proposes a power division multiplexing (PDM) scheme, associating with multiple-input multiple-output (MIMO) techniques. By taking advantage of the PDM’s natural merits, the proposed scheme owns better robustness to the channel-varying when compared with the conventional time division multiplexing (TDM) and frequency division multiplexing (FDM). Furthermore, we derive the related optimization algorithms to guarantee the system performance efficiently. The simulation results show that the proposed PDM with optimization algorithm outperforms the TDM/FDM distinctly. Uplink Cooperative NOMA Scheme with Higher Spectral Efficiency Yunxiao Sun, Yan Li, Xiang Wang, Yajuan Guo and Daohua Zhu State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, China
Fifth-generation (5G) communication network puts forward a demanding requirement for spectrum resources. To improve spectral efficiency, a novel uplink cooperative nonorthogonal multiple access (NOMA) N095 model is proposed. In particular, the proposed scheme enables the relay node to perform a cooperative transmission and uplink transmission simultaneously during the cooperative phase, at the expense of a slight decrease in the signal reception reliability. Moreover, the optimal power allocation strategy of relay node is given. Relay selection criteria is also presented. We analyze the outage probability and outage throughput in both ideal and non-ideal successive interference cancellation (SIC) conditions. Simulation results confirm that the proposed scheme can obtain higher throughput than other cooperative NOMA schemes. A New Refined Lyapunov Functional for Time-varying Delayed Systems Can Zhao, Daixi Liao, Xinzhi Liu, Qishui Zhong, Shouming Zhong and Kaibo Shi University of Electronic Science and Technology of China, China
N139 For time-delay systems, a new refined Lyapunov function is proposed, whose derivative is not estimated by the integral inequalities, but is directly applied to linear matrix inequality conditions after using the existing study and then combines the derivative function with Lemma 1. Meantime, some useful cross terms appear to be good for lower conservatism. The numerical results show that such simple functional form would reduce the conservativeness of conditions slickly.
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Session 4: Wireless Communication Optical Access network for a SMART Niamey Djibo Boubacar Issoufou, Ahmed Kora, Djibo Boubacar Issoufou and Samuel Ouya Laboratoire e-Inov DSTN ESMT/ESP/UCAD, Ecole Sup. Multinationale Télécom, Senegal
The galloping urbanization of African countries south of the Sahara is becoming a development problem in that it is draining social, economic and political challenges with the emergence of megacities. Following the example of the city of Niamey, capital of the Republic of Niger, the management of communities imposes a N145 new paradigm on all dimensions. In order to overcome and solve this phenomenon, it would be necessary to integrate the technological dimension in the main areas that characterize the city to endow it with intelligence. This approach makes it possible to rationalize the functioning of public services and to sufficiently involve citizens in the management of the city. This article proposes to launch the milestones of an optimized approach to modernize the city of Niamey to make it intelligent, with the ambition to revitalize its economy, to clean up its environment and where, the improvement of the well-being of city dwellers is placed at the center of the actions. WLAN Fingerprint Localization with Stable Access Point Selection and Deep LSTM Xinyu Shi, Jing Guo and Zesong Fei Beijing Institute of Technology, China
With the development of communication technologies, the demand for location-based services is growing rapidly. The presence of a large number of Wi-Fi network infrastructures in buildings makes Wi-Fi-based indoor positioning systems the most popular and practical means of providing location-based services in N096 indoor environments. This paper proposes a machine learning indoor positioning method based on received signal strength. This algorithm considers the access point (AP) selection strategy to reduce the computational load and enhance noise robustness whereby improving the positioning accuracy. The local feature extraction method is used to extract powerful local features to further reduce the noise impact. We then employ the Long Short-Term Memory (LSTM) network to learn high-level representations for the extracted local features. The proposed method has been tested both in the simulation environment and the real environment. The experimental results show that the algorithm can greatly improve the accuracy and computational complexity of position prediction. Artificial Noise Projection Matrix Optimization Method for Secure Multi-cast Wireless Communication Jianbang Gao, Zhaohui Yuan and Bin Qiu Northwestern Polytechnical University, China
Transmit beamforming and artificial noise (AN) methods have been widely employed to achieve wireless physical layer (PHY) secure transmissions. While most works focus on transmit beamforming optimization, N097 little attention is paid to the design of artificial noise projection matrix (ANPM). In this paper, compared with traditional ANPM obtained by zero-forcing method, which only makes AN power uniform distribution in free space outside legitimate users (LU) locations, we design ANPM to maximize the interference on eavesdroppers without interference on LUs for multicast directional modulation (MCDM) scenario based on frequency diverse array (FDA). Furthermore, we extend our approach to the case of with imperfect locations of Eves. Finally, simulation results show that Eves can be seriously affected by the AN with perfect/imperfect locations, respectively. Distributed mmWave Massive MIMO: a Performance Comparison with a Centralized Architecture for Various Degrees of Hybridization N104 Yu Zhao, Ignas G.Niemegeers and Sonia Heemstra De Groot Eindhoven University of Technology Eindhoven, The Netherlands
62 mmWave massive MIMO (multiple-input multiple-output) is envisioned to offer a considerable capacity improvement with respect to sub-6GHz systems. However, it suffers much more from path loss and shadowing. Moreover, the present hardware constraints limit the number of radio-frequency (RF) chains, which, in turn, significantly limits the performance of the system achievable with full digital beamforming. To mitigate these performance limiting factors, we propose to geographically distribute the antennas over the coverage area and cluster them into a number of remote antenna arrays (RAA). This leads to a shorter average distance between antennas and user equipment (UEs), more spatial diversity against shadowing and the opportunity to overcome the limitations on the number of RF chains. We analyze and compare, for a mixed-office environment and a specific geographical distribution of the RAAs, the performance of a centralized architecture and a distributed one with varying numbers of RF chains, encompassing hybrid beamforming and full digital beamforming. We assume low-complexity zero-forcing (ZF) beamforming on the downlink and max-min power allocation. Using Monte Carlo simulation, we obtain the empirical CDF of the per-UE spectral efficiency (SE). The results show that: (a) The distributed architecture has better performance than the centralized one in terms of per-UE SE; (b) When the number of RF chains is no less than twice the number of UEs, hybrid beamforming achieves the same performance as full digital beamforming in terms of per-UE SE. New Pilot Signal Design on Compressive Sensing Based Random Access for Machine Type Communication Ma Jing, Erzhong Xue and Dong Xueli Xidian University, China
In machine type communication (MTC), the activity of MTC devices is sparse when devices attempt to contend for an access point. Due to the success of the compressive sensing (CS) technique in recovering N116 sparse signals, CS-based random access has been applied for channel estimation and active device detection. The selection of pilot signals significantly affects the transmitted overhead. In this paper, inspired by Nam's results, we present two pilot sequence sets based on m-sequences and Sidel'nikov sequences. Compared with Nam's results, the sets constructed here provide various period lengths and set sizes. Then, we get the low coherence of the CS measurement matrices from the m-sequence based and the Sidelnikov-based pilots. The low coherence is used for a theoretical guarantee of signals recovery. Effect of Synchronization Deviation on The Performance of PSWFs Non-sinusoidal Communication System Chuan-Hui Liu, Da-Wei Yang, Fa-Ping Lu and Jia-Fang Kang Naval Aviation University, China
As a non-sinusoidal modulation, the time domain orthogonal modulation based on the Prolate Spheroidal Wave Functions (PSWFs) has the advantages of high spectral efficiency and high power utilization rate. However, in actual wireless communication systems, there are always non-ideal interferences such as synchronization deviation, multipath propagation, Doppler frequency shift. These factors have a serious N3001 impact on the performance of non-sinusoidal communication systems based on PSWFs. In this paper, from two aspects of frequency synchronization offset and symbol synchronization offset, the effect of synchronization error on the performance of non-sinusoidal communication system based on PSWFs is studied. Through theoretical analysis and simulation analysis, the results show that although the PSWFs signal has the best time-frequency energy aggregation characteristics, its Inter Carrier Interference (ICI) and Inter Symbol Interference (ISI) capabilities are relative. When there is synchronization frequency offset and time offset in the system, there are serious symbol interference and carrier interference in the PSWFs modulated signal. To ensure the system performance, the synchronization error needs to be eliminated or effectively reduced.
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Session 5: Space Communications, Navigation and Tracking Aerial Image Stitching via Transformation Space Filtering Hao Wang, Zhengyan Ding and Zhiguo Yan Third Research Institute of Ministry of Public Security, China
The high-quality stitching of aerial image captured using Unmanned Aerial Vehicle (UAVs) is a challenging N134 problem, because the image may have deformation, wide baseline, low texture and different resolution in the overlapping area. This paper presents a novel aerial image stitching algorithm. It utilizes a transformation space filtering method to generate inlier points, which enables efficient initialization of the local alignment model. Transformation space is constructed by sampling transformations on a Cartesian grid and the optimal sample is filtered out using a coarse-to-fine searching strategy. The effectiveness of the our method is proved through empirical results using aerial image dataset. A Bayesian Probabilistic AOA Localization Algorithm Zhenyu Zhang, Shaoli Kang and Xiang Zhang Beihang University, China
In the application of fifth-generation (5G) technology, the research of large-scale antenna technology and millimeter-wave beamforming technology has promoted the improvement of positioning accuracy based on the angle of arrival (AOA) method. The AOA positioning only needs to measure the incoming wave direction N108 of the transmitter, eliminating the dependence on signal time synchronization. Due to multipath and non-line-of-sight (NLOS) propagation, the accuracy of AOA measurements is severely affected. Therefore, in most cellular systems, AOA is often not used as the main positioning parameter, but as an auxiliary positioning parameter. In this paper, we propose a positioning algorithm based on Bayesian probability. This method not only solves the multi-value problem in AOA positioning but also further eliminates the AOA deviation caused by NLOS. The method proposed in this paper can adaptively learn channel bias and modify the AOA measurement. Experiments show that our proposed method significantly improves the positioning accuracy, even if NLOS errors occur. Improved DV-Hop Based on Dynamic Parameters Differential Evolution Localization Algorithm Qiang Li, Xia Huang, Yuhang Xu and Dan Zhao Lanzhou Jiaotong University, China
The Distance Vector-Hop (DV-Hop) localization algorithm is the most well-known range-free localization algorithm in the wireless sensor networks. However, it is widely known that its localization accuracy is limited. In order to solve the problem, a improved DV-Hop Ranging-based Dynamic Parameters Differential Evolution N141 Localization (IDV-Hop-DPDE) algorithm is proposed in this paper. IDV-Hop-DPDE used the anchor nodes, which have the ability to broadcast multi-communication radius message, and to decimalize a counted number of hops. Then combined with near-degree and modified the ranging between unknown nodes and anchor nodes. Finally, to improve searching efficiency and obtain the most optimal position, dynamically changing strategies to the scaling factor and the crossover probability of the traditional Differential Evolution algorithm is introduced. The simulation results show that IDV-Hop-DPDE algorithm achieves better performance than traditional DV-Hop localization algorithm, the node location error is obviously reduced . Detecting Malicious TLS Network Traffic Based on Communication Channel Features Rongfeng Zheng, Jiayong Liu, Kai Li, Shan Liao and Liang Liu Sichuan University, China N136
For highly camouflaged Command and Control (C&C) communications, especially those using the Transport Security Layer (TLS) protocol, traditional classifiers which only based on statistical features or TLS handshake
64 features gradually fail to detect such behavior. In this context, exploring features of other dimensions to build a more targeted recognition model is one of the ways to alleviate this problem. This paper proposed a new method of detecting malicious TLS traffic by using the communication channel as the detection unit, and a new set of modeling features for the communication channel was designed, including distribution features, the consistency features and statistical features of TLS communication channel. Experiments show that compared with other two types of features, the consistency features contribute most, and combining these three types of features together can train a better classifier which the precision reaches 92.57%. Comparative experiments show that the proposed method is more advantageous when faced with highly camouflaged TLS flows because the proposed method also achieved highest F1 score, and the accuracy is about 2% higher than the classifier based on the TLS handshake features, and 12% higher than the clustering model based on the statistical features of flow.
Allocation of available link resources based on the number of aircraft in different airspaces Dongli Wang, Qilu Sun, Yequn Wang, Xiaohongyi Han and Hui Zhong Air Force Engineering University, China
Since the Poisson distribution is not universal for the arrival of aircraft in the airspace, in this paper, we N110 leverage the negative binomial distribution to simulate the aircraft's arrival process, and combine the flight speed to estimate the total number of aircraft in the regular airspace. Then, we obtain the estimated number of aircraft in the irregular airspace by utilizing the Monte Carlo and pixel counting methods. Finally, we allocate the available link resources in different airspaces based on the estimated number of aircraft. Numerical results show that the Monte Carlo method has better performance than the pixel counting method, but their allocated results are very close. Research on routing control with delay constraint based on contact plan for integrated satellite-terrestrial network Hao Zhang and Chunfeng Wang China Academy of Space Technology, China
Integrated satellite terrestrial network plays an increasingly important role in earth observation and space information warfare. Satellite network covers a wide range of areas and is the only means to provide Internet N111 access and communication services in other areas. Routing research mostly focuses on the internal routing of satellite networks, without considering the integrated service requirements such as bandwidth and delay limited. This paper proposes a delay constraint routing algorithm based on contact plan(DCRM-CP) . This algorithm establishes a contact plan topology map between satellite nodes, also known as contact plan list (CPL). Based on this CPL, a routing table can be established during routing search to meet the requirements of delay limitation service. Through simulation and analysis, compared with traditional routing algorithms, this algorithm improves the performance of satellite networks.
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Session 6: Wireless Network Triple-Handshake-Based Semi-Blind Beamforming in mmWave Massive MIMO Ziyao Hong, Ting Li and Fei Li Nanjing University of Post & Telecommunication, China
Hybrid precoding has been used in millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) system to reduce the high cost and power consumption of full digital precoding. However, N129 conventional hybrid precoding requires complex channel estimation before beamforming, which needs pretty high pilot consumption or complex computation. In this paper, we propose a triple-handshake-based semi-blind beamforming method whose basic process is called handshake, which composed of two basic steps—beam impulse and beam calibration in time division duplex (TDD). The simulation results demonstrate that this semi-blind beamforming can achieve a pretty good performance with extremely low complexity and power consumption. In addition, compared with other methods without perfect channel status information (CSI), our method reaches a better spectral efficiency, as well. A Secure routing scheme based on probability prediction for wireless sensor networks Di Tang, You Yu, Jian Gu, Yuanyuan Yang, Weijia Han and Xiao Ma The Third Research Institute of the Ministry of Public Security, China
In wireless sensor networks (WSNs), the sensor can be easily compromised by attacker. The traditional intrusion detection can’t detect the compromised nodes immediately. The undetected compromised sensors can utilize advanced resources to attract data stream, compromise and drop the data packets. In this paper, N105 we propose a secure routing protocol (Secure Relay Grid Routing Protocol) based on probability prediction. In the protocol, the network is divided into different small grids. By utilizing the geographic information and intrusion detection information, the proposed protocol is designed with a routing metric which is based on a mathematics prediction model. The routing metric could guarantee the message detour those compromised grids that have not been detected by the intrusion detection. The theoretical analysis and OPNET simulation results show that the proposed protocol can provide high delivery ratio and decrease the number of the compromised packets. Research and Implement of Just-In-Time Dual Buffer-Queues in LoRaWAN Gateways Jia Wang and Pan-Guo Fan Northwestern Polytechnical University, China
Firstly, giving an overview of LoRa wireless communication technology and LoRaWAN specification based on this technology. In view of the problem that the capacity of the LoRaWAN is seriously restricted by the gateway’s throughput under actual deployment, introducing a dual buffer-queues structure based on JIT N119 (Just-In-Time) scheduling into the gateway. By this means, the probability of threads blocking in the gateway is reduced, and the working efficiency of the gateway is improved, thereby optimizing the capacity to forward downlink data of the gateway. Experiments done in this paper have proved that the throughput of the gateway using this JIT dual buffer-queues mechanism is significantly enhanced and is more suitable for Class C packets forwarding, which effectively solves the actual deployment problem for LoRaWAN such as low network capacity caused by different types of nodes and gateway paralysis caused by sudden increase in downstream traffic. Modeling and Performance Analysis of LTE Coexisting with Wi-Fi Zichao Qin, Aijing Li and Hai Wang N127 The Army Engineering University of PLA, China
The explosive growth of mobile data makes mobile operators seek the capacity of their cellular network.
66 Besides, the scarcity of spectrum resources brings a great challenge to the development of wireless communication. Therefore, the mobile operator intends to extend LTE technology to the unlicensed spectrum, which is mainly used by Wi-Fi. LAA and LTE-U are two major unlicensed LTE technologies developed for the coexistence with Wi-Fi. Due to different access mechanisms, LAA and LTE-U have different performance trends with the change of the number of Wi-Fi stations. In this paper, we model and analyze the two coexistence modes using the Markov model, and analyze the throughput of the system, the access
probability Toff and collision probability of LTE and Wi-Fi in the system where the two coexistence methods are applied to the coexistence network. The results show that LAA coexistence method is suitable for coexistence scenarios with low Wi-Fi density, while LTE-U is more suitable for coexistence scenarios with relatively high Wi-Fi density. EE-TAR: Energy Efficient and Thermal Aware Routing Protocol for Software Defined Wireless Body Area Networks Adeel Ahmed, Xingfu Wang, Ammar Hawbani, Muhammad Umar Farooq, Taiyaba Qureshi and Shamsher Ullah University of Science and Technology of China, China
Software Defined Networking (SDN) has gained tremendous prominence in replacing the conventional network by providing versatile and dynamic network management. Recent developments in wireless N143 technology and the rising cost of healthcare expenditures have drawn people’s interest towards smart healthcare systems which are reliable and efficient in terms of cost and performance. In this paper, we integrated two novel technologies together and proposed “Energy Efficient and Thermal Aware Routing Protocol for Software Defined Wireless Body Area Networks” (EE-TAR). This protocol provides a Cost Function (CF) metric based on three quantities, transmission distance, temperature, and residual energy. It uses the least cost path algorithm for multi-hop routing and also uses thermal model to mitigate the problems caused by temperature rise. Simulation results show better performance in terms of throughput, number of dead nodes, residual energy and path loss. A Knowledge Reasoning Algorithm Based on Network Structure and Representation Learning Jinkui Yao and Yulong Zhao Jiangnan Institute of Computing Technology, China
Representation learning of knowledge graphs is widely used in the field of artificial intelligence, but it is currently far from comprehensive. All previous translation-based models ignore the multi-relational network N117 structure attributes. Inspired by the law of gravitation, a novel algorithm strTransE proposed by us to integrate the network structure attributes into representation learning. In strTransE, the relation is the gravity between entities. The magnitude of gravity is determined by the weight of the entity. In order to solve the gravitational quantification, we introduced the network structure attribute to represent the weight of the entity. Experimental results on datasets WN18 and FB15K show that, our algorithm achieves significant and continuous improvements in link prediction. A method of real-time service quality evaluation based on customer behavior Yinchao Cheng, Qifang Xie, Zichun Zhang China Mobile Research Institute, Department of User and Market Research, China
With the advent of 5G and the upgrade of user consumption, users have more and more requirements on the FP2-8003 network and services provided by communication operators. It is becoming increasingly difficult to ignore the importance of services quality to the company operates. Only by providing better services can enterprise win trust and loyalty of users. In order to keep abreast of the company's current service status and user demand trends, companies usually use the method of Internet evaluation to collect user feedback. However, Internet measurement methods have problems of low efficiency, high rejection rate, and biased conclusions. In order to solve above problems, this article proposes a real-time evaluation of service quality based on customer
67 behavior. This program is closely integrated with the enterprise's production, operation and service links. The solution is closely integrated with the production operation and service links of the enterprise. According to the typical behavior of the interface between the customer and the enterprise, the user is accurately identified and targeted for intelligent invitation and evaluation to achieve service quality monitoring and information collection under real scenes and real environments. The research results show that the real-time evaluation of service quality based on customer behavior has significantly improved user participation, sample recovery trends, sampling rule rationality, evaluation recovery rate, rejection rate, survey accuracy, and promotion of production efficiency.
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Session 7: Micro/nano-photonic Device and All Optical Signal Processing Study on Non-coherent Detection of DP-QPSK Signal Based on Delay-Line-Interferometer Huiwen Yin and Zhiping Huang National University of Defense Technology, China
Dual-polarization quadrate phase shift keying (DP-QPSK) is one of the mainstream modulation formats in the N124 current 100Gbps backbone optical network. Study on DP-QPSK demodulation in published literature are more about digital coherent detection. However, in the context of non-cooperative communication, the carrier frequency is unable to know which leads to residual frequency offset with coherent detection. This paper studies the method of DP-QPSK non-coherent detection based on delay line interferometer (DLI), avoiding the problems caused by the unknown carrier frequency. An algorithm is proposed to restore the raw data from transmitting end and the simulation results demonstrate that the algorithm is effective. Ring Resonator Structure for An Add-drop Filter Application Muhammad Raditya Gumelar and Retno Wigajatri Purnamaningsih Universitas Indonesia, Indonesia
Hybrid precoding has been used in millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) system to reduce the high cost and power consumption of full digital precoding. However, N128 conventional hybrid precoding requires complex channel estimation before beamforming, which needs pretty high pilot consumption or complex computation. In this paper, we propose a triple-handshake-based semi-blind beamforming method whose basic process is called handshake, which composed of two basic steps—beam impulse and beam calibration in time division duplex (TDD). The simulation results demonstrate that this semi-blind beamforming can achieve a pretty good performance with extremely low complexity and power consumption. In addition, compared with other methods without perfect channel status information (CSI), our method reaches a better spectral efficiency, as well. DOA estimation for nested array from reusing redundant virtual array elements viewpoint Chenghong Zhan, Guoping Hu, Zixin Zhang, Yule Zhang and Shijie Yue Air Force Engineering University, Xi’an, China
N133 This Paper considers the direction of arrival(DOA) estimation with nested arrays by fully utilizing the redundant virtual array elements.The redundant virtual array achieved in the difference coarray constructed from a nested or coprime array structure is always abandoned in existing techniques.In the paper we proposed a new technique achieves better utilization of redundant virtual array which equivalently increased snapshots of received signal as well as improved DOA estimation performance. Research on Anti-jamming Algorithm of BDS Signal in WiFi6 Environment Qiliang Chen, Jiahong Liang, Fan Zhang and Bo Bi Beijing Microelectronics Technology Institute, China
Bei Dou satellite navigation system (BDS for short) is original constructed to perform navigation tasks as open, global, compatible satellite system. BDS satellite signal has adjacent relationship with WIFI6 in S-band, which N144 has great communication rate is increasingly used in urban recent years. To achieve success operating under WiFi6 environment, we have to overcome numerous challenges, which are the need for avoiding narrow-band interference caused by WiFi6. Analyzed the characteristic of WiFi6 subcarrier and BDS signal width, and built the experiment to obtain in band interference of BDS with WiFi6, we proposed in the current paper a time-frequency domain filter based anti-jamming algorithm, where the windows function in time domain added before FFT filter in frequency domain to reduce BDS signal leakage, and CFAR based detection threshold to detect narrowband interference with strong power. We carried out comparison numerical
69 simulations and experiment on FPGA prototype using the proposed time-frequency domain filter. The result yielded in the experiment showed that the interference caused by WiFi6 is cleared and the error rate of navigation bits is returned to normal. It seems that the current technique provides an insight in improve the signal quality of BDS navigation when WiFi6 is everywhere. A Low-complexity Hybrid Iterative Signal Detection Algorithm for Large-scale MIMO Dan Zhao, Dong Shen, Xiaofang Cao and Xia Huang Lanzhou Jiaotong University, China
Massive multiple input multiple output (MIMO) technology has been become one of 5G’s core technologies. However, conventional MMSE algorithm usually involves high complexity due to the required matrix inversion of large-size matrix, which make it hard to implement in realistic applications. Based on this situation, the paper presents a hybrid iterative algorithm for signal detection for unlink, which is the combination of N137 adaptive Damped Jacobi (DJ) algorithm and conjugate gradient (CG) algorithm. CG algorithm is used to provide an effective search direction for adaptive DJ algorithm. At the same time, Chebyshev approach is used to accelerate convergence and the soft information can be approximately solved by using the bit likelihood ratio in the channel coding. The complexity of algorithm is quantitatively analyzed in the theory, and the bit error rate performances and convergence speeds of different detection algorithms with different decision methods are studied by simulation experiments. The simulation results show that the proposed algorithm can achieve near-optimal MMSE linear detection performance under the condition of low complexity and a faster convergence speed after only a small number of iterations. A feature-based automatic LED part locating method and the inspection of welding quality of LED chips Zili Chen and Honglin Liu China Jiliang University, China
There are problems such as high error rate and low efficiency if the quality of LED chip welding is manually inspected. Digital image processing is used in this paper to inspect the quality of LED chip welding. Due to the limited field of view and insufficient resolution of the X-ray camera, multiple acquisitions shall be N131 made, so there is inevitably overlap between images. Based on characteristics of the parts to be inspected, a feature-based automatic locating method is proposed. The copper rods whose gray level are the lowest is chosen as featured. At first, features are extracted through threshold segmentation. Then, the geometric relation-ship of the features is used to locate LED parts in the image and the overlap is removed. After the locating of LED parts, the LED chips on the part can be further located and inspected and inspected. The algorithm is efficient, the locating of 161 part can be finished in less then one second. The time for locating and inspection of the 161 part is about 12.4 seconds. Traffic modelling for IoT networks: A survey Yufei Li and Wanqing Tu The University of Auckland, Auckland, New Zealand
A network traffic model obtains the rules and characteristics of computer networks to support the monitoring, predicting, managing, and securing of network services. With the fast development of various Internet-of-Things (IoT) applications, the end users/devices attached to and the application data transferred FP2-8010 through modern computer networks are quite different from those in traditional computer networks. This paper first reviews existing network traffic models developed for traditional computer networks, by mainly studying short-range dependence models and long-range dependence models. We then look into major IoT applications proposed for smart cities. We compare and summarise the characteristics of networks, data traffic, energy requirements, etc. for these different IoT applications, and hence the challenges when modelling and representing data traffic future computer networks. According to the challenges presented, existing solutions and future potential directions are discussed. We hope that our study may provide references and research insights to support the emerging needs of traffic modelling in IoT networks.
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Session 8: Information Communication and Management A machine learning approach for predicting antibody properties Oche A Egaji, Seamus Ballard-smith, Ikram Asghar and Mark Griffiths University of South Wales, Pontypridd, United Kingdom
This paper used an amino acid location-based sequence encoding as a feature extraction techniques to identify single chains antibody molecules that bind to B-lymphocyte stimulator (BLyS) antigen. The data were FP2-8007 manually derived from the European patent (EP2275449B1) text. The dataset was cleaned and made suitable for the machine learning models. The accuracy, precision and recall achieved across individual descriptors (Membrane and Soluble) for Logistic regression, KNN, KSVM, and Random Forest Tree was above 80%. However, it was much lower for the Naïve Bayes except for the precision score. The promising accuracy value achieved from such a minimal dataset has significant implications for the drug discovery process – this includes considerable savings in time and resources. Detecting illicit entities in Bitcoin using supervised learning of ensemble decision trees Pranav Nerurkar, Yann Busnel, Romaric Ludinard, Fabien Autrel, Kunjal Shah, Madhav Chandane, Sunil Bhirud and Dhiren Patel NMIMS University Mumbai, Maharashtra
Since its inception in 2009, Bitcoin has been mired in con-troversies for providing a haven for illegal activities. Several types of illicit users hide behind the blanket of anonymity. Uncovering these entities is key for forensic investigations. Current methods utilize machine learning for identifying these illicit entities. However, the existing approaches only focus on a limited category of illicit users. The current paper proposes to address the FP2-8008 issue by implementing an ensemble of decision trees for supervised learning. More parameters allow the ensemble model to learn discriminating features that can categorize multiple groups of illicit users from licit users. To evaluate the model, a dataset of 2059 real-life en-tities on Bitcoin was extracted from the Blockchain. Nine features were engineered to train the model for segregat-ing 28 different licit-illicit categories of users. The proposed model provided a reliable tool for forensic study. Empirical evaluation of the proposed model vis-a-vis three existing benchmark models was performed to highlight its efficacy. Experiments showed that the specificity and sensitivity of the proposed model were comparable to other models. CPU and RAM utilization were also monitored to demonstrate the usefulness of the proposed work for real-world deployment. A smart transportation management system for managing travel events Ikram Asghar, James Cosgrove, William Warren, Oche Alexander Egaji, Mark Griffiths and Shelly Barratt University of South Wales, Pontypridd, United Kingdom
Culinary tourism is on the rise as a growing number of people want to join trips full of people, food and FP2-8009 drinks. This paper presents the main idea of an intelligent transport system developed for ale trail lovers who wish to join culinary tours. The system is based on a web application that handles organising, scheduling and viewing a currently live trail and a consumer-side cross-platform mobile application that provides updates on bus schedules, bus location and nearest bus stops etc. The system is used to automate the process of organising culinary ale trails. By using this system, massive culinary ale trail events can be arranged quickly and efficiently. Designing IT service management at Indonesia Internet Domain Names Registry Association’s helpdesk function FP2-8011 Evelyn Sevina Hermita, Yudho Giri Sucahyo and Arfive Gandhi Universitas Indonesia, Depok, Indonesia
71 Indonesia Internet Domain Names Registry Association (PANDI) hosts helpdesk function as a part of .id domain management. It is a one-stop facility for all registrants and the public to submit questions and complaints regarding .id domain names. Previously, helpdesk function had poor performance since its business processes were manual and slow. This research aimed to design Information Technology Service Management (ITSM) implementation as guidelines for PANDI helpdesk. It demonstrated case study research using qualitative approach by involving helpdesk officers, and c-level in depth interview. This research relied on ITIL V3 2011 framework to generate ITSM design: service catalog, Service Level Agreement, and Standard Operating Procedures. It resulted in tracking status, priority label, reporting feature, and service categories can be added on the application side. Those artifacts guided helpdesk to improve the quality of services provided by PANDI. They consisted of a service catalog that includes 11 Customer Facing Service (CFS) and Resource Facing Service (RFS), five SLAs for helpdesk business process services, and three SOPs for account changes request service. Constructing a learning style model in an adaptive learning system GAO Huzi and YIN Guocai North China Institute of Aerospace Engineering, China
Most of the adaptive learning systems adopt the classical learning style theory, without considering the FP1-004 characteristics of online learning. Based on learning theories, the study analyses psychological activities in e-learning and the requirements of knowledge characteristics for students’ learning activities, systematically determine learning style’s elements of e-learning and design a new learning style model in an adaptive learning system. Furthermore, we design a scale which reliability and validity are measured by a reasonable experiment. The space of human interaction as the basis for modeling multilingualism and minimizing the studied languages Bulatbayeva Kulzhanat Nurymzhanovna and Duisekova Kulyash Kerimbekovna L.N.Gumilyov Eurasian National University, Kazakhstan
FP1-006 The article considers the scheme of languages functioning in speech and communicative activity of an individual. The key idea is that a person who speaks different languages uses them to a certain necessary minimum. A systematic analysis of the content of each language in the activity of an individual will allow you to determine the boundaries and scope, taking into account the need for communication. Such modeling of a person's needs in languages will ensure the effectiveness of the development of their multilingualism. The content of each model is implemented by applying the achievements of modern linguistics. Tablet computer truly help students to master mathematical knowledge? Xintong Yang Northeastern University at Qinhuangdao, China
With the deepening of education reform, more and more teachers suggest their students in the classroom apply the tablet computers to do mathematics learning. Does it work? Especially in the aspect of mastering FP1-008 mathematics knowledge. This study chose 152 Junior high school students as participants and make a survey. The results indicated that the tablets computer has a positive influence on students' understanding of mathematics knowledge, directly applying mathematical knowledge to solve difficult problems and comprehensively applying mathematical knowledge to solve general mathematical problems. While it has a negative influence on students’ applying knowledge to solve simple problems. Therefore, it is suggested that tablet computers should be used with traditional teaching methods in practical mathematics teaching.
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Listeners
L001 Fengsong Liu, Sanechips Technology Co., Ltd, China L002 Zhihua Zhu, Sanechips Technology Co., Ltd, China
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