Simulation of Bidirectional Long-Distance Chaos Communication Performance in a Novel Fiber-Optic Chaos Synchronization System
Simulation of Bidirectional Long-Distance Chaos Communication Performance in a Novel Fiber-Optic Chaos Synchronization System
复制标题
DOI：
10.1109/jlt.2012.2232283
复制
发表时间：
2013-02
影响因子：
4.7
通讯作者：
Jiagui Wu;Zhengmao Wu;Yu-Ran Liu;L. Fan;Xi Tang;G. Xia
中科院分区：
文献类型：
--
作者：
Jiagui Wu;Zhengmao Wu;Yu-Ran Liu;L. Fan;Xi Tang;G. Xia
提出了一种可实现双向长距离混沌通信的光纤混沌同步系统。在该系统中，两个响应激光器（RL）之间的混沌同步是通过从远程驱动激光器（DL）通过长距离光纤注入相同的驱动混沌信号来实现的。仿真结果表明，在适当的操作条件下，两个RL之间可以实现高质量的混沌同步，而任意一个RL与DL之间的同步质量较差，这对提高系统的安全性是有益的。利用两个同步的混沌激光器输出信号作为两个混沌载波，采用一种新的信息加密解密方法，分析了该系统的通信性能、长距离光纤信道的影响以及系统的安全性。采用优化的系统结构后，在100 km的光纤通道上，两条沿着相反方向传播的10 Gb/s报文可以有效解密。
A novel fiber-optic chaos synchronization system allowing bidirectional long-distance chaos communication is proposed. For this system, chaos synchronization between two response lasers (RLs) is achieved via an identical driven chaotic signal injection from a remote driving laser (DL) over a long-distance fiber. The simulated results show that under suitable operation conditions, high-quality chaos synchronization between the two RLs can be obtained while the synchronization quality between any one of RLs and the DL is bad, which is useful for improving the system security. Using the two synchronized chaos output signals from RLs as two chaotic carriers and adopting a novel message encryption and decryption method, the communication performances, the impact of long-distance fiber channel and the security of this system, have been analyzed. After adopting an optimized system configuration, two 10 Gb/s messages propagating along opposite direction can be effectively decrypted over 100 km fiber channel.