非相干光反馈与非相干光注入混沌同步通信系统仿真分析

本文对非相干光反馈与非相干光注入激光混沌同步保密通信系统进行了理论仿真研究.本系统为Pecora-Carroll混沌同步系统,基于Lang-Kobayashi速率方程,建立了发送激光器和接收激光器的理论模型.利用该模型分析了同步建立时间、同步误差,混沌键控编码/解码以及调制速率等特性.仿真结果表明系统具有很好的同步性能和保密性,混沌同步时间约为1 ns,混沌键控编码速率可达1 Gbit/s.研究结果对非相干光反馈与非相干光注入激光混沌同步保密通信系统的设计具有重要参考价值.

Simulation Analysis of Chaotic Synchronization Communication System Based on Incoherent Optical Feedback and Incoherent Optical Injection

A chaotic synchronization secure communication system based on incoherent optical feedback and incoherent optical injection was numerically studied.The system is a Pecora-Carroll chaotic synchronization system.Based on the Lang-Kobayashi rate equation,theoretical model of the transmitter and the receiver laser was established.The characteristics of the system,such as synchronization time,synchronization error, chaos shift keying encode/decode and modulation rate were analyzed by using the model.The results of simulation show that the system has good synchronization quality and good abilities of robust secure.Meanwhile the synchronization time is about 1 ns,and the chaos shift keying encoding reach a high rate of 1 Gbit/s.The results have significant reference value to design of the chaotic synchronization secure communication system based on incoherent optical feedback and incoherent optical injection.