Dissertation > Mathematical sciences and chemical > Physics > Theoretical Physics > Nonlinear physics > Chaos Theory

A Research on Optical Chaotic Secure Communication System Based on Optisystem

Author ZhangZongZuo
Tutor HuHanPing
School Huazhong University of Science and Technology
Course Control Engineering
Keywords Optical chaos Secure communication Erbium-doped optical fiber Optisystem
CLC O415.5
Type Master's thesis
Year 2011
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With the rapid development of modern communication technology , the communication capacity continues to increase , communication security , more and more attention has been paid , there is an urgent need to study the development of high-speed , high confidentiality of next-generation information security technologies . Recent years , as the light of the new security technology chaotic secure communication technology has developed rapidly , due to its high bandwidth , unpredictable and complex nonlinear dynamics , etc. , a strong challenge to the traditional system of confidential . The study has a high number of dimensions , easy to debug , compact and lightweight optical chaotic secure communication system is of great research significance . In recent years, the rapid development of related technologies at home and abroad , at present there are four international produce optical chaos and three modulation signal . Design an optical chaos secret system key is generated chaos method, and the selection of the synchronous mode . In this paper, the research status at home and abroad , and compare optical chaos advantages and disadvantages of the method are several ways to generate feedback on the tradition of the erbium-doped fiber ring to improve to have a chaotic laser , and the function of each system module , at the same time the system equation debugging and simulation , to verify the feasibility of the program . Based on the optical communication simulation software optisystem the specific experimental optical path using phase space reconstruction theory analysis of optical chaotic sequence generated by the road , the calculated average Lyapunov exponent and related parameters proved confidential communication reliability , the system has a high number of dimensions , compact and lightweight design goals .

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