Communications with Chaotic Optoelectronic Systems Cryptography and Multiplexing

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Communications with Chaotic Optoelectronic Systems Cryptography and Multiplexing COMMUNICATIONS WITH CHAOTIC OPTOELECTRONIC SYSTEMS CRYPTOGRAPHY AND MULTIPLEXING A Thesis Presented to The Academic Faculty by Damien Rontani In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the School of Electrical and Computer Engineering Georgia Institute of Technology December 2011 Copyright c 2011 by Damien Rontani COMMUNICATIONS WITH CHAOTIC OPTOELECTRONIC SYSTEMS CRYPTOGRAPHY AND MULTIPLEXING Approved by: Professor Steven W. McLaughlin, Professor Erik Verriest Committee Chair School of Electrical and Computer School of Electrical and Computer Engineering Engineering Georgia Institute of Technology Georgia Institute of Technology Professor David S. Citrin, Advisor Adjunct Professor Alexandre Locquet School of Electrical and Computer School of Electrical and Computer Engineering Engineering Georgia Institute of Technology Georgia Institute of Technology Professor Marc Sciamanna, Co-advisor Professor Kurt Wiesenfeld Department of Optical School of Physics Communications Georgia Institute of Technology Ecole Sup´erieure d'Electricit´e Professor William T. Rhodes Date Approved: 30 August 2011 School of Electrical and Computer Engineering Georgia Institute of Technology To those who have made me who I am today, iii ACKNOWLEDGEMENTS The present PhD research has been prepared in the framework of collaboration between the Georgia Institute of Technology (Georgia Tech, USA) and the Ecole Sup´erieured'Electricit´e(Sup´elec,France), at the UMI 2958 a joint Laboratory be- tween Georgia Tech and the Centre National de la Recherche Scientifique (CNRS, France). I would like to acknowledge the Fondation Sup´elec,the Conseil R´egionalde Lorraine, Georgia Tech, and the National Science Foundation (NSF) for their financial and technical support. I would like to sincerely thank my \research family" starting with my two advisors who made this joint-PhD project possible; Prof. Marc Sciamanna (Sup´elec)and Prof. David Citrin (Georgia Tech). They both supervised my research project and provide valuable insight, input and advice, even as I was moving from a continent to the other. Marc was still a young assistant professor when I started. He found the right words to reinsure me in the choice of pursuing academic research, a key step in my intellectual life. His unconditional support, his will to make his students successful and his passion for research were communicative and of incredible support during the difficult and stressful moments of the thesis, those which any graduate student might experience at some point. I benefited a lot from his pragmatism and great knowledge in the field of nonlinear sciences. I would like to thank him very warmly for all he has done for me. I am also extremely thankful to David, whose experience in research help me get through the undesirable life of a graduate student. His kindness and trust were an integral part of my scientific achievements. I am mostly grateful to him for believing iv in my unconventional ideas. I would like also to thank him for being extremely supportive during the writing of the PhD manuscript, as he was mailing me funny \PhD Comics" cartoons to cheer me up. Finally, I would like to thank David's wife, Alka, for the kind invitations and her stunning Indian cooking. I would like to express my thanks and gratitude to Alexandre Locquet, who co- advise me very closely during my stay in Metz. He had the difficult task to manage me and my unflagging obstinacy. His constant support, care and kindness always helped me especially in the final line of the PhD. By challenging my ideas, he definitely made me a better scientist. His main flaw would be his unconditional support to the Italian soccer team. Georgia Tech Lorraine (GTL) was my second home. The administrative staff and professors made my research experience very agreeable. I would like to thank Yves Berthelot, president of GTL, Prof. Abdallah Ougazzaden, Director of GTL and of the UMI 2958 for letting me conduct my research in his laboratory. Amongst the various staff members, I would like to express my sincere thank to Josyane Roshitz, her help in the complex US administrative process were and still are invaluable; Jean-Jacques Michel (aka J2M) for the countless times he helped me to solve a large range of computer-related problems, John Fritch for his good advice and friendship, Sandrine Cadamuro for her help and advice to solve professional and personal issues. Finally, I would like to thank the different staff members I interact with at GTL. The warmest thanks to Florence Sto¨ıa,Catherine Bass, and Sandra Song for their friendship, generosity, and kindness, while I was on the Atlanta campus. The members of the academic office of the Atlanta campus were not in rest: Dr. Bonnie Ferri, Chris Malbrue, Tasha Torrence, and Marilou Mycko have been of incredible help and they worked tirelessly to help me in the most critical times in the organization of the PhD defense. I would like to express my sincere gratitude to them. v I would also take the opportunity to thank key people at Sup´electhat have con- tributed to the PhD success. First, Yves Tanguy former director of industrial research who introduced me to Marc in the first place. Then, Jacques Oksman, current direc- tor or research, and Jo¨elJacquet, delegate of research at Sup´elecCampus de Metz who let me join the recently established PhD program at Sup´elec,and finally Patrick Turelle who has always been a great supporter. I still see most of the Sup´elecCampus of Metz as a big family, with whom I spent at least five years of my life. Therefore, I would like to thank all the staff members of the Metz Campus for their kindness and continuous support during my thesis. It is often believed that research is a lonely path to walk and that most scientists are disconnected from reality. I used to share this misbelief until I met a very warm scientific community in the nonlinear sciences and photonics. Team work and col- laborations have been the corner stones of this whole PhD research. Here, I would first express my sincere thanks to Silvia Ortin (Universidad de Cantabria, Spain) for her participation to the study of the security analysis of optical chaos generators and her expertise in time-series modeling and analysis. I am also extremly grateful to Atsushi Uchida (Saitama University, Japan) for his kindness, trust, and our fruitful collaboration on the generation of orthogonal codes for multiplexed chaos-based ap- plications. Everything, started at CLEO Europe 2009 in Munich, Germany, when after a discussion, we came up to an idea which had settled a very successful and enriching collaboration. He also invited me for a truly inspirational stay in his lab- oratory in the region of Tokyo. There, we had the most passionate discussions on nonlinear sciences and even developed new ideas laying the foundations for future collaborative research. I am also thankful to all the jury members, Prof. Steven McLaughlin, Prof. William T. Rhodes, Prof. Erik Verriest, and Prof. Kurt Wiesenfeld for their avail- ability and constructive remarks during the whole evaluation of this PhD thesis work. vi It was a great honor for me to present my work to you. In the course of my time as a PhD student, I met amazing lifelong friends. They help me to enjoy Metz and Atlanta to their fullest. Chronologically, I met Frederic Pons (aka Fred) and Audric Saillard, two \Gadzards" who shared with me the se- crets to survive in my residence, by sharing their Internet access! For a while, they were as brothers as I was geographically isolated (no TGV at the time) and had to face unfavorable weather conditions. Later, new members integrated the PhD room; Zheshen Zhang, Wui-Han Go, Sarah Herbison and Mohammed Abid joined us. Sarah was greatly supportive and helped me a lot to decipher the complexity of the social interactions in the USA. Mohammed brought with him this warm and friendly spirit from the north of Tunisia. For his wedding with Hagger, he invited the whole PhD room to Sfax for an unforgettable journey. Later came Vinod Ravindran who is definitely amongst my best and closest friends. We had our desks face to face for almost two years. During that time, I tried to learn how to decipher his peculiar sense of humor and farfetched jokes, but also to assimilate some of his impressive organi- zational and communication skills. As I was on my way leaving GTL, new students showed up and left the lab: Konstantino Pantzas a talented greek student who speaks four languages fluently, Peter Bonano who makes me discover organics products at the \Whole Food Market" and with whom we had the craziest road trip to New- Jersey, Ning Tian my Chinese roommate for six months in Atlanta, David Swafford an american student who initiates me the Southern-American way of life and to the fundamentals of waterskiing, Hassan Kingravi with whom we had the most passionate discussions on sciences. I am also particularly grateful to Aur`eleBalavoine, she was very supportive and like a little sister to me during my stay in Atlanta. My time was also shared with Sup´elec,where I had the opportunity to meet Ignace Gatare, Christian Dan, and Nicolas Marsal. Nicolas is one of the most talented person I have ever encountered; sciences, music, painting, magic are few of his skills. He became a vii great friend during my PhD training and a huge fan of some of my lame imitations (I am still wondering why). Finally, Matthieu Bloch and Laurent Capolungo, who once upon a time were PhD students and who are today successful assistant professors at Georgia Tech. Although their radically different styles, they impersonate my wildest scientific aspirations and conception of what is a modern scientist.
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