半导体激光器混沌电路延时反馈控制方法  

Delay feedback control method of semiconductor laser chaotic circuit

作　　者：张士荣 赵俊杰[1] 谈发明[1] ZHANG Shirong;ZHAO Junjie;TAN Faming(JiangSu University of Technology,Changzhou Jiangsu 213001,China)

机构地区：[1]江苏理工学院,江苏常州213001

出　　处：《激光杂志》2022年第1期154-158,共5页Laser Journal

基　　金：国家自然科学基金青年科学基金(No.61803186)。

摘　　要：由于当前方法未能建立物理模型,导致混沌电路延时反馈控制复杂度和控制耗时增加,容错率下降,为此提出一种半导体激光器混沌电路延时反馈控制方法。组建半导体激光器混沌电路延时反馈条件下激光器电流激发混沌的物理模型,获取激光器非线性增益和线宽增强因子特性,并获取控制延迟可控条件。分析延迟量和反馈增益的解析关系,获取目标周期轨道控制参数的分岔图,以此为依据进行半导体激光器混沌电路延时反馈控制。实验结果表明,所提方法能够有效降低混沌电路延时反馈控制复杂度和控制耗时,大幅度提升容错率。Due to the failure of the current methods to establish the physical model, the control complexity and control time-consuming of the chaotic circuit are increased, and the fault tolerance rate is reduced. Therefore, a delay feedback control method for semiconductor laser chaotic circuit is proposed. The physical model of chaos excited by laser current under the condition of time-delay feedback of semiconductor laser chaotic circuit is established. The nonlinear gain and linewidth enhancement factor characteristics of laser are obtained, and the controllable conditions of control delay are obtained. The analytical relationship between the delay and the feedback gain is analyzed, and the bifurcation diagram of the control parameters of the target periodic orbit is obtained. Based on this, the delay feedback control of semiconductor laser chaotic circuit is carried out. The experimental results show that the proposed method can effectively reduce the complexity and time-consuming of delayed feedback control of chaotic circuits, and greatly improve the fault-tolerant rate.

关 键 词：半导体激光器 混沌电路 延时反馈控制 物理模型 

分 类 号：TN702[电子电信—电路与系统]