面向复杂网络的半导体激光器混沌动力学及同步特性研究

项目名称： 面向复杂网络的半导体激光器混沌动力学及同步特性研究

项目编号： No.61306061

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 项水英

作者单位： 西安电子科技大学

项目金额： 25万元

中文摘要： 激光混沌通信作为一种新兴的保密光通信技术，因能从光通信网络的物理层实现信息的安全传输，引起了世界范围的广泛关注。目前，半导体激光混沌系统的研究主要集中在点对点系统，然而自然界中的真实网络一般具有大量节点及复杂的连接拓扑。考虑到复杂网络具有一般性和普适性，本项目结合复杂网络和激光混沌技术展开研究：一方面，定量研究网络拓扑结构和耦合参数等对网络中非线性节点的混沌不可预测度特性的影响，为增强激光混沌通信网络的安全性奠定基础；另一方面，探索半导体激光混沌复杂网络的新型同步机理与同步条件，提出并设计提高半导体激光混沌复杂网络同步能力的有效方案。对这些问题进行深入探索，有益于揭示激光器网络的新型同步机理、增强实际光通信网络的安全性。

中文关键词： 混沌光通信；激光器网络；时延隐蔽性；不可预测度；混沌同步

英文摘要： As a novel and emerging secure optical communication technology, optical chaotic communication has received more and more attention, as it can realize secure information transmission from the physical layer of the network. So far, the chaotic systems based on semiconductor lasers are mainly concentrated on the point-to-point systems, however, the real networks in nature usually contain large number of nodes with complex connection topologies. Considering the generalization and universality of complex network, this project mainly focuses on complex network of chaotic semiconductor lasers. On the one hand, we evaluate quantitatively the roles of connection topologies and coupling parameters on the unpredictability properties of nonlinear nodes in the complex laser network, which is helpful for enhancing the security of chaotic optical communication network. On the other hand, we try to explore novel synchronization mechanism and condition of the complex network based on chaotic semiconductor lasers,propose and design effective scheme to improving the synchronization quality. These studies are extremely interesting for revealing novel synchronization mechanism for complex laser network, and are also useful for enhancing the security of practical optical communication network.

英文关键词： Optical chaotic communication；semiconductor laser network；time delay concealment；unpredictability；chaos synchronization