混沌外光注入半导体环形激光器的混沌特性  

Chaotic Characteristics of Semiconductor Ring Lasers Injected by Chaotic External Light

作　　者：于萍 范健 毛洪存 冯玉玲[1] 庞爽 姚治海[1] YU Ping;FAN Jian;MAO Hongcun;FENG Yuling;PANG Shuang;YAO Zhihai(School of Physics,Changchun University of Science and Technology,Changchun 130022,China;Jilin Branch of National Computer Network Emergency Response TechnicalTeam/Coordination Center of China,Changchun 130028,China)

机构地区：[1]长春理工大学物理学院,长春130022 [2]国家计算机网络应急技术处理协调中心吉林分中心,长春130028

出　　处：《吉林大学学报（理学版）》2023年第3期671-680,共10页Journal of Jilin University:Science Edition

基　　金：吉林省科技发展计划项目(批准号:20190201135JC).

摘　　要：提出一种将混沌光注入半导体环形激光器(SRL)的方案,以获得具有低延时特征(TDS)的混沌激光,并提高其带宽.在该方案中,主激光器为具有外腔双路相位调制光反馈的分布反馈半导体激光器,将其输出的混沌光同时注入SRL的顺时针和逆时针2个模式中,从而构成混沌外光双模式注入的SRL系统.数值研究外光注入系数和反馈系数等参数对该系统输出混沌光的TDS影响,用自相关函数曲线中延时特征峰的最大值表示延时特征值,将该系统对TDS的抑制效果与混沌外光单模式注入的SRL系统对比,并研究系统输出混沌光的带宽.结果表明,该方案对TDS具有较好的抑制效果,可有效抑制输出混沌光的延时特征,并提高其带宽,最大3 dB带宽可达19 GHz.We proposed a scheme of injecting chaotic laser into semiconductor ring lasers(SRL)to otain the time delay signature(TDS)of chaotic laser and increase its bandwidth.In this scheme,the master lasers was a distributed feedback semiconductor lasers with double phase modulation optical feedback in the outer cavity,and chaotic laser output was simultaneously injected into both clockwise and counterclockwise modes of the SRL,thus forming a SRL system with dual modes optical injection from external chaos light(SRL-DMOIECL).We numerically studied the influence of parameters such as external light injection coefficient and feedback coefficient on the TDS of the output chaotic laser of the system.The maximum value of the time delay signature peak in the autocorrelation function curve was used to represent the time delay signature value.The suppression effect of this system on TDS was compared with that of the SRL system with single mode optical injection from external chaos light(SRL-SMOIECL),and the bandwidth of chaotic laser from the system was studied.The results show that the scheme has a better suppression effect on TDS,which can effectively suppress the TDS of the output chaotic laser and increase its bandwidth,the maximum 3 dB bandwidth can reach 19 GHz.

关 键 词：半导体环形激光器 混沌激光 相位调制 延时特征 带宽 

分 类 号：O415[理学—理论物理]