中国激光, 2020, 47 (10): 1001003, 网络出版: 2020-10-16
开环单向耦合半导体激光器的相位混沌同步 下载: 652次
Phase Chaos Synchronization of Semiconductor Laser with Open-Loop Unidirectional Coupling Configuration
激光光学 混沌 半导体激光器 保密通信 混沌同步 相位同步 希尔伯特变换 laser optics chaos semiconductor laser secure communication chaos synchronization phase synchronization Hilbert transform
摘要
研究半导体激光器开环单向耦合的相位混沌同步。采用希尔伯特变换提取混沌激光器光场的相位时间序列,利用互相关系数、同步误差分析半导体激光器相位同步特性。实验结果表明,当注入强度大于0.80、频率失谐为-11.0~4.0 GHz时,主、从激光器可实现同步系数大于0.95的相位混沌同步,且相位混沌同步的参数范围大于强度混沌同步。实验也依据平均相位差验证了系统的相位锁定现象。
Abstract
A phase chaos synchronization of semiconductor lasers with open-loop unidirectional coupling is studied. The phase time series of chaotic laser field is extracted using a Hilbert transform, and the phase synchronization characteristic is analyzed by a cross correlation coefficient and synchronization error. The results of the experiment show that the master laser and slave laser can attain a phase chaos synchronization with a synchronization coefficient above 0.95 at an injection strength exceeding 0.80 and its frequency detuning from -11 GHz to 4 GHz. The results also show that phase chaos synchronization has a wider parameter range than intensity chaos synchronization. According to the average phase difference, the phase-locking phenomenon is also observed during the experiment.
孙宇川, 毛晓鑫, 王安帮. 开环单向耦合半导体激光器的相位混沌同步[J]. 中国激光, 2020, 47(10): 1001003. Sun Yuchuan, Mao Xiaoxin, Wang Anbang. Phase Chaos Synchronization of Semiconductor Laser with Open-Loop Unidirectional Coupling Configuration[J]. Chinese Journal of Lasers, 2020, 47(10): 1001003.