Project Achievements

Cost-optimized optical 100 Gbps transport for metro networks

Novel optical for 100Gbps pairments. Development of software mod- 100GET-METRO data transport in metro and regional area els for a more detailed investigation of networks were developed. Prototypes for high-speed transmission systems com- transceiver subsystems with enhanced pleted this activity. modulation formats were realized and Project ID: CP4-001 tested in the laboratory and field environ- Approach ment. Transmission impairments for these Start Date: 1 October 2007 formats were also investigated, and com- Various modulation formats were investi- Closure date: 31 December 2010 pensators to eliminate the effects of these gated in the project. DPSK-3ASK was impairments were developed. selected to be implemented in the trans- ceiver demonstrator. Here, amplitude and Main focus phase of the optical carrier are modulated, Partners: encoding 5 bits in 2 consecutive symbols, ADVA AG Optical Networking, The 100GET-METRO project investigated resulting in a symbol rate of approximately 100 Gbps transport technologies for metro 40 GBaud. The technology to support this Agilent Technologies R&D and network applications, targeting a cost ef- modulation scheme has been available Marketing GmbH & Co. KG, Ger- fective solution, which will enable the use commercially already during the first year many of high data rate technologies also for enterprise users. To Christian Albrecht Universität Kiel, achieve this objective, novel Germany modulation formats were investi- gated, which combine lowest Fraunhofer Institute for Telecom- implementation effort with high- munications, Heinrich-Hertz- est system capacity and best Institut, Germany tolerance to fibre system impair- Technische Universität Hamburg- ments. A transceiver demonstra- Harburg, Germany tor was realized enabling the transmission of 100 Gbps data Technische Universität Dortmund, streams over 430 km of fibre, Germany using the novel DPSK-3ASK VPIsystems, Germany modulation format. The field demonstration using this trans- ceiver was one of the world-wide first 100 Gbps transmission dem- CoCoCo-Co ---ordinator:ordinator: onstrations, in which forward Michael Eiselt error correction (FEC) was im- ADVA AG Optical Networking, plemented, enabling real-time Germany error- transmission. E-mail: [email protected] A second focus of the project was on the evaluation of fibre Project Website effects on high data rate and www.celticplus.eu/Projects/Celtic-projects/ multi-level signals and the devel- Call4/100GET/100GET-METRO/Project- opment of compensators to over- default.asp come these impairments. This focus was complemented by the development of new procedures and equipment for distortion tol- erance testing and components to emulate fibre propagation im- of the project, enabling an early reach by slightly reducing the some of the world’s first experi- hardware realization. During the transmitted data rate, while using mental demonstrations in the field progress of the project it became the same optical transceiver. of adaptive data rate transmission apparent that dynamic transmis- These demonstrations laid the were achieved. This novel applica- sion data rates, which are adaptive foundation for further work in the tion has now found large attention to the quality of the optical link, will novel field of adaptive data rate in the scientific community and will become an important topic to en- transmission. be further developed leading to able a more efficient utilization of lower cost and more energy- the transceiver hardware and to The results of the project were efficient optical transport solutions. reduce cost and energy consump- published in approximately 40 tion. The transceiver demonstrator peer-reviewed journal articles and developed during the project en- conference contributions. Nine abled one of the first demonstra- invention disclosures filed on pro- tions of adaptive data rate trans- ject work will enable a commercial mission. exploitation of the project results. Achieved results Impact

The work carried out in the project Due to the large growth rates of resulted in the development of data transmission capacity in opti- several prototypes, for a 100 Gbps cal transport networks, system transceiver as well as for test operators require 100 Gbps optical equipment. Simulation models transmission technology as soon resulting from the project work as possible. Currently commer- were included into a commercial cially announced solutions are software package. The experimen- targeted towards long transmis- tal activities culminated in a field sion distances in the backbone trial in the OC- network. They are based on new TET test bed. This field demon- technology developments and stration was one of the world-wide therefore will only be available at first 100 Gbps transmission dem- high cost and will not be suited for onstrations with real-time bit-error metro networks. The solutions rate measurements. Forward error developed within the project are correction (FEC) was implemented, targeting the shorter transmission enabling error-free transmission. distances. By utilizing lower speed technologies for 100 Gbps trans- Going beyond the initial objectives port, the project has provided the of the project, the transmission of necessary developments for this variable data rates was demon- technology to be ready in time for strated with the prototype devel- early deployments. The technol- oped within the project. This was ogy developed within the project also one of the world-wide first will result in product releases by experiments demonstrating an the commercial partners during the extension of the transmission year 2011. Within the project,

About Celtic Participants: small, medium Celtic is a European research and development programme, designed to and large companies from tele- strengthen Europe’s competitiveness communications industry, univer- in through short sities, research institutes, and and medium term collaborative R&D local authorities from all 35 Eure- projects. Celtic is currently the only ka countries. European R&D programme fully dedi- cated to end-to-end telecommunicati- Celtic Office on solutions. c/o Eurescom, Wieblinger Weg 19/4, 69123 Heidelberg, Germany Timeframe: 8 years, from 2004 to Phone: +49 6221 989 405, e-mail: 2011 [email protected]

Clusterbudget: in the range of 1 www.celtic-initiative.org billion euro, shared between govern- ments and private participants