Unidirectional open-loop chaotic synchronization communication based on a semiconductor laser with double optical feedback
Unidirectional open-loop chaotic synchronization communication based on a semiconductor laser with double optical feedback
复制标题
基于双光反馈半导体激光器的单向开环混沌同步通信
DOI：
10.7498/aps.61.014212
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发表时间：
2012-01
影响因子：
1
通讯作者：
Xia Guang-Qiong
中科院分区：
文献类型：
--
作者：
Ding Ling;Wu Zheng-Mao;Wu Jia-Gui;Xia Guang-Qiong
利用具有双光反馈的半导体激光器作为混沌发送器，构建了单向混沌同步通信系统，并对其性能进行了数值研究。结果表明，通过选择合理的参数，可以有效地抑制双反馈半导体激光器产生的混沌载波的时延行为；通过发射机到接收机的强注入，可以实现发射机和接收机之间的完美同步，同步质量对发射激光和接收激光之间的频率失谐具有很高的容错性；在加性混沌调制加密方案下，500Mbit/S编码信息可以有效地隐藏在混沌载波中，并在接收端成功提取。
Using a semiconductor laser with double optical feedback as a chaos transmitter, a unidirectional chaotic synchronization communication system is constructed, and the performances of such a system are investigated numerically. The results show that by selecting reasonable parameters, the time delay behaviour of chaotic carrier generated by the semiconductor laser with double optical feedback can be suppressed efficiently; through the strong injection from transmitter to receiver, the perfect synchronization between transmitter and receiver can be realized, and the synchronization quality has a high tolerance to frequency detuning between transmitted laser and received laser; under the additive chaos modulation encryption scheme, the 500 Mbits/s encoded message can be hidden efficiently in the chaotic carrier and successfully extracted at the receiver.