光混沌保密通信系统在MATLAB与OptiSystem中的协同实现  

Co-simulation of optical chaotic secure communication systems in MATLAB and OptiSystem

作　　者：刘劲杨 周雪芳[1] 毕美华[1] 杨国伟[1] 王天枢[2] Liu Jinyang;Zhou Xuefang;Bi Meihua;Yang Guowei;Wang Tianshu(School of Communication Engineering,Hangzhou Dianzi University,Hangzhou,Zhejiang 310018,China;National and Local Joint Engineering Research Center of Space Optoelectronics Technology,Changchun University of Science and Technology,Changchun,Jilin 130022,China)

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]长春理工大学空间光电技术国家地方联合工程研究中心,吉林长春130022

出　　处：《光电工程》2021年第9期40-48,共9页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(61705055);浙江省重点研发计划资助项目(2019C01G1121168)。

摘　　要：基于两个具有平行结构的电光时延反馈环,本文设计了一种电光强度混沌通信系统。通过混沌注入混沌的方式来产生更加复杂的混沌波形,增强混沌复杂程度以及通信系统的保密性。在本次设计中,采用MATLAB与OptiSystem协同的方式来对该系统进行仿真,解决了OptiSystem不能模拟光学反馈环路的问题。由OptiSystem中成熟的激光器和二进制序列生成模块为系统提供能量与输入信号,由MATLAB程序实现电光时延反馈环,并在OptiSystem中完成信号在光纤链路中的传输。文章介绍了如何利用MATLAB与OptiSystem实现混沌系统的协同仿真,并通过数值模拟表明,提出的用于模拟光学反馈环路的方法具有可行性,设计的混沌系统的性能与理论值吻合,证明了该混沌生成方式的可行性。An electro-optic intensity chaotic communication system is designed by combining two electro-optic delay feedback loops with parallel structures.By injecting chaos into chaos,a more complex chaotic waveform is gener-ated to enhance the chaotic complexity and the communication system confidentiality.In this design,MATLAB and OptiSystem software are used to simulate the system,which solves the problem that OptiSystem software can't simulate the optical feedback loop.The mature laser and binary sequence generation modules in OptiSystem software provide energy and input signals for the system.The electro-optic delay feedback loops are realized by the MATLAB program,and the signal transmission in optical fibers is completed in the OptiSystem software.The article introduces how to use MATLAB and OptiSystem software to realize the co-simulation of chaotic systems.Numerical simulations show that the proposed method is feasible to simulate the optical feedback loop,and the simulation results are in good agreement with the theoretical values,which prove that the chaotic signal is generated.

关 键 词：混沌 混沌加密 电光时延 MATLAB OPTISYSTEM 

分 类 号：TN436[电子电信—微电子学与固体电子学]