延迟光反馈混沌半导体激光器的熵率评估  

Entropy rate evaluation of delayed optical feedback chaotic semiconductor lasers

作　　者：梁博 蔡强 徐兵杰 马荔 李璞 LIANG Bo;CAI Qiang;XU Bingjie;MA Li;LI Pu(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;Guangdong Provincial Key Laboratory of Information Photonics Technology,School of Information Engineering,Guangdong University of Technology,Guangzhou,Guangdong 510006,China;Science and Technology on Communication Security Laboratory,Institute of Southwestern Communication,Chengdu,Sichuan 610041,China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [2]广东工业大学信息工程学院广东省信息光子技术重点实验室,广东广州510006 [3]西南通信研究所保密通信实验室,四川成都610041

出　　处：《光电子．激光》2024年第12期1323-1329,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(62175177,62322504,61927811);四川省科技计划(2022YFG0330);广东省创新创业团队计划资助项目;保密通信重点实验室稳定计划支持(2022)资助项目。

摘　　要：延迟光反馈半导体激光器是近年来应用最广泛的混沌光源。然而,其不可预测性评估仍然是一个亟待解决的问题。从信息论的角度来看,根据线性化微分方程计算的Kolmogorov-Sinai(KS)熵可以准确地评估混沌激光信号的不可预测性。但是,评估实验数据的KS熵是非常困难,甚至是不可能的。本文证明了,在优化嵌入维度d、归一化垂直分辨率ε_(N)和采样时间τ后,Cohen-Procaccia(CP)熵可以作为一种实用的替代方法用于量化延迟光反馈半导体激光器实验产生混沌信号的不可预测性。Delayed optical feedback semiconductor lasers are the most widely used chaotic light sources in recent years.However,its unpredictability evaluation is still an urgent issue to be addressed.From the information-theoretic point of view,the Kolmogorov-Sinai(KS)entropy calculated from the linearized differential equation can accurately evaluate the unpredictability of chaotic laser signals.However,evaluating the KS entropy of experimental data is very difficult,if not impossible.In this paper,we demonstrate that the Cohen-Procaccia(CP)entropy can be used as a practical alternative method for quantifying the unpredictability of chaotic signals generated from delayed optical feedback semiconductor lasers experiments after optimizing the embedding dimension d,the normalized vertical resolutionε_(N),and the sampling timeτ.

关 键 词：激光混沌 半导体激光器 延迟光反馈 不可预测性 Cohen-Procaccia(CP)熵 

分 类 号：TN249[电子电信—物理电子学]