基于非相干光反馈半导体激光器的双向混沌通信研究

提出了一种基于非相干光反馈半导体激光器的双向混沌通信系统,数值研究了该系统的同步特性及通信性能. 结果表明,当两个激光器参数一致时,系统能获得无延时的高质量混沌同步,实现实时双向通信;当激光器内部参数失配时,系统的同步性能及通信质量会受到一定的影响,但该系统对参数失配的容忍性较好,在一定的参数失配范围内,系统仍能实现较好的双向混沌通信. 关键词： 非相干光反馈 半导体激光器 混沌同步 双向通信

Bidirectional chaos communication based on semiconductor laser with incoherent optical feedback

In this paper, a bidirectional chaos communication system based on semiconductor lasers with incoherent optical feedback is presented, and the synchronization characteristics and the communication performances of such a system are numerically investigated. The results show that when the parameters of the two lasers are matched, the good-quality chaos synchronization with zero lag time and simultaneously bidirectional message transmission can be realized and when the parameters of the two lasers are mismateched, the synchronization quality and communication performance are affected to a certain extent, but this system possesses good robustness against mismatched parameters and can still realize bidirectional chaos communication within a certain mismatched parameter range.