基于半导体环形激光器的混沌安全保密通信  

Chaos secure communication based on semiconductor ring laser

作　　者：张定梅[1] ZHANG Dingmei(School of Mathematics and Physics,Jingchu University of Technology,Jingmen Hubei 448000,China)

机构地区：[1]荆楚理工学院数理学院,湖北荆门448000

出　　处：《光通信技术》2020年第10期37-41,共5页Optical Communication Technology

基　　金：荆楚理工学院2018年度校级科学研究项目(YB201802)资助;2020年度湖北省教育厅科学研究计划指导性项目(B2020194、B2020197)资助。

摘　　要：为了满足保密通信的需求,提出了一种基于3个半导体环形激光器(SRL)进行双路混沌通信的方案,数值仿真后给出了几种情况下的时间序列、自相关图与眼图,并讨论了传输距离对通信质量的影响。研究表明:驱动SRL(D-SRL)仅在自反馈的条件下混沌信号质量较差;当引入互反馈后,混沌质量明显提高;随着传输距离的增加,量化保密通信质量的品质因子逐渐降低,但当距离增加到130 km时,品质因子依然保持在6以上,该方案可以进行长距离双通道安全保密通信。In order to satisfy the demand of secure communication,a scheme of dual-channel chaos communication based on three semiconductor ring lasers(SRL)is proposed.The time series,autocorrelation diagrams and eye diagrams under different conditions are given through numerical simulation,and the influence of transmission distance on communication quality is also discussed.The research show that the quality of chaos signal is poor for the drive SRL(D-SRL)subjected to self-feedback,after introducing mutualfeedback,the quality of chaos is significantly improved.As the transmission distance increases,the quality factor to quantify the quality of secure communication gradually decreases,but when the distance increases to 130 km,the quality factor remains above six.This scheme enables long-distance dual-channel secure communication.

关 键 词：非线性光学 半导体环形激光器 保密通信 混沌 反馈 

分 类 号：TN929.11[电子电信—通信与信息系统] O437.1[电子电信—信息与通信工程]