窃听重构共驱混沌同步的理论与实验研究  

Theoretical and Experimental Study on Eavesdropping Reconstruction of Common Signal-Induced Chaos Synchronization

作　　者：杜鑫源 刘琦 王龙生[1,2,3] 郭园园 王安帮[4,5,6] 王云才 Du Xinyuan;Liu Qi;Wang Longsheng;Guo Yuanyuan;Wang Anbang;Wang Yuncai(Key Lab of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;College of Electronic Information and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,Jilin,China;Key Lab of Photonic Technology for Integrated Sensing and Communication,Ministry of Education,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Guangdong Provincial Key Laboratory of Information Photonics Technology,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Institute of Advanced Photonic Technology,School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,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]太原理工大学电子信息与光学工程学院,山西太原030024 [3]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033 [4]广东工业大学通感融合光子技术教育部重点实验室,广东广州510006 [5]广东工业大学广东省信息光子技术重点实验室,广东广州510006 [6]广东工业大学信息工程学院/先进光子技术研究院,广东广州510006

出　　处：《中国激光》2025年第2期200-208,共9页Chinese Journal of Lasers

基　　金：国家自然科学基金(62035009,62105233);山西省“1331工程”重点创新团队;中央引导地方科技发展基金(YDZJSX2021A009,YDZJSX2022A010);山西省基础研究计划(202203021221079);应用光学国家重点实验室开放基金(SKLAO2022001A09);广东省引进创新创业团队计划。

摘　　要：开展了窃听重构共驱半导体激光器混沌同步的验证性研究。窃听者通过公共信道截获少量不易察觉的驱动光信号,将其进行高增益放大后注入参数匹配的响应激光器构建混沌同步。理论与实验结果表明,窃听重构的混沌同步质量劣于合法通信双方的混沌同步质量。主要原因是,高增益光放大引入了大量的自发辐射噪声并降低了驱动信号的信噪比,恶化了窃听重构的混沌同步质量。分析了光放大增益、激光器内部参数失配以及光纤传输距离对窃听重构混沌同步质量的影响。上述结果为基于混沌同步的保密光通信的安全性分析与增强提供了参考。Objective Enhancing the security of chaotic secure optical communication is a key focus of current research.Efforts are being devoted to eliminating the time-delay signatures of chaotic carriers to prevent eavesdroppers from acquiring critical parameters,such as the external cavity length.Additional efforts are being made to expand the hardware parameter space of the chaotic transceiver to increase the difficulty of brute force attacks by the eavesdropper.The premise for the eavesdropper to successfully decrypt a chaotic encrypted signal lies in the ability of the eavesdropper to reconstruct the chaotic carrier synchronized with legitimate users.However,current chaotic secure optical communication has not yet verified the eavesdropping reconstruction of chaos synchronization.To address this issue,this study conducts theoretical and experimental research on the eavesdropping reconstruction of chaos synchronization.The results indicate that the quality of eavesdropped chaos synchronization is inferior to that of legitimate chaos synchronization.The aforementioned findings provide a foundation for the security analysis and enhancement of secure optical communication based on chaos synchronization.Methods The drive signal(drive)is split into two beams.One beam is injected into a local response laser(RLA)while the other beam passes through an optical fiber and is amplified by an erbium-doped fiber amplifier(EDFA)prior to its injection into another response laser(RLB).This setup achieves common signal-induced chaos synchronization between legitimate users.An eavesdropper located near the drive source intercepts a portion of the drive signal and amplifies it,and then injects the amplified drive signal into a laser to reconstruct the chaos synchronization.To investigate the capability of the eavesdropper to reconstruct the chaos synchronization,we utilize the VPI optical transmission line laser model to construct the simulation system.Moreover,a proof-ofconcept experiment on the reconstruction of the chaos synchronizatio

关 键 词：半导体激光器 混沌激光 混沌同步 混沌保密通信 窃听重构 

分 类 号：TN248.4[电子电信—物理电子学]