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。
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.
作者
孙宇川
毛晓鑫
王安帮
Sun Yuchuan;Mao Xiaoxin;Wang Anbang(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第10期14-21,共8页
Chinese Journal of Lasers
基金
国家自然科学基金(61822509,61731014,61805171)
山西省1331工程重点创新团队项目
山西省高等学校中青年拔尖创新人才计划
山西省优秀人才科技创新项目(201805D211027)。
关键词
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
phasesynchronization
Hilbert transform
