滤波光反馈半导体激光器的动态特性及混沌同步通信研究  

Study on the dynamic behaviors and chaos synchronization communication of semiconductor lasers subject to filtered optical feedback

作　　者：江宁[1] 刘丁[2] 薛琛鹏 邱昆[1] 

机构地区：[1]电子科技大学通信与信息工程学院,成都611731 [2]四川师范大学成都学院,成都611745

出　　处：《中国科技论文》2015年第14期1640-1644,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(61301156);高等学校博士学科点专项科研基金资助项目(20130185120007);中央高校基本科研业务专项资金资助项目(ZYGX2013J001)

摘　　要：理论推导了滤波光反馈半导体激光器的稳定输出条件,比较分析了常规光反馈和滤波光反馈对半导体激光器输出动态特性的影响;同时,建立了基于速率方程的滤波光反馈半导体激光器混沌同步通信系统模型,研究了滤波光反馈半导体激光器系统的混沌同步特性和通信性能。结果表明:窄带滤波反馈可以保证半导体激光器持续工作在稳态输出状态;适当滤除反馈光的高频成分,可以扩展混沌半导体激光器系统的稳定同步区域,增强混沌同步鲁棒性,提高系统的混沌同步通信性能。The stable output condition for the semiconductor laser subject to filtered optical feedback (FOFSL)is theoretically an-alyzed.A comparison investigation on the dynamic behaviors of the FOFSL and the conventional optical feedback semiconductor laser is introduced.The performance of chaos synchronization and communication in the FOFSL system are investigated,by es-tablishing a numerical model based on the rate equation model.The simulation results indicate that with a narrow filtering,the FOFSL can constantly work in the stable regime.It also demonstrates that 1)the stable chaos synchronization operation region of the FOFSL chaos system can be greatly extended,2)the robustness of chaos synchronization can be enhanced to some extent, and 3)the chaos communication performance can be improved,when the high frequency components are properly filtered out.

关 键 词：半导体激光器 混沌同步 混沌通信 滤波光反馈 

分 类 号：TN248.4[电子电信—物理电子学]