Jiang Ning, Zhao Anke, Liu Shiqin, Xue Chenpeng, Qiu Kun
Opt Express. 2018 Dec 10;26(25):32404-32416. doi: 10.1364/OE.26.032404.
We propose and demonstrate a closed-loop chaos system composed of external-cavity semiconductor lasers subject to common chaotic phase-modulated optical feedback (CCPMOF). The efficient-bandwidth and time-delay signature (TDS) characteristics of the chaotic carrier, the properties of chaos synchronization, as well as the performance and security of chaos communication are systematically investigated. The numerical results demonstrate that wideband chaotic carrier with effective TDS suppression can be easily obtained, high-quality chaos synchronization with considerable mismatch robustness, frequency detuning tolerance, and phase fluctuation tolerance can be achieved in a wide operation range, and high-speed chaos communication is available. With respect to the conventional closed-loop systems, the bandwidth and complexity of chaotic carrier is greatly enhanced, and the performances of chaos synchronization and communication are obviously improved.
我们提出并演示了一个由外腔半导体激光器组成的闭环混沌系统，该系统受到共同混沌相位调制光反馈（CCPMOF）的影响。系统地研究了混沌载波的有效带宽和时延特征（TDS）、混沌同步特性以及混沌通信的性能和安全性。数值结果表明，可以轻松获得具有有效TDS抑制的宽带混沌载波，在较宽的工作范围内能够实现具有相当失配鲁棒性、频率失谐容忍度和相位波动容忍度的高质量混沌同步，并且可以实现高速混沌通信。相对于传统的闭环系统，混沌载波的带宽和复杂度得到了极大提高，混沌同步和通信的性能也得到了明显改善。
