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提出了一个由四个半导体激光器通过相互耦合构成的混沌网状网络系统,研究了这种拓扑结构下各激光器的动力学行为、任意两个激光器之间的混沌同步特性以及参数失配对同步性能的影响,并对该系统的保密通信性能进行了分析。理论仿真结果表明,网状网络系统中各激光器在合适的相互耦合条件下均可呈现混沌输出,四个激光器输出的混沌信号可达到整体同步(即所有混沌信号之间都同步)或部分同步。基于该网络的混沌同步,可实现多用户之间信息的双向保密传输。
A chaotic mesh network system consisting of four semiconductor lasers coupled by mutual coupling is proposed. The dynamics of each laser under such topology, the chaos synchronization between any two lasers, and the parameter mismatch to the synchronization performance Influence, and analyzed the system’s confidential communication performance. The theoretical simulation results show that all the lasers in the mesh network system can exhibit chaotic output under the proper conditions of mutual coupling. The chaotic signals output by the four lasers can reach the overall synchronization (that is, all the chaotic signals are synchronized) or partially synchronized. Based on the chaotic synchronization of the network, bidirectional secure transmission of information between multiple users can be realized.