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电光反馈混沌保密系统时延标签特征隐藏研究
Research on the Time Delay Signature Concealment of Electro-Optic Feedback Chaotic Communication System
- 光通信研究 2025年第6期
- 作者机构：
1.广东技术师范大学 光电工程学院，广州 510665
2.广东工业大学 信息工程学院 通感融合光子技术教育部重点实验室，广州 510006
- 作者简介：
安跃华（1984-），女，山西忻州人。讲师，博士，主要研究方向为光通信器件和系统。
高震森，教授。E-mail：gaozhensen@gdut.edu.cn
- 基金信息：国家自然科学基金资助项目(62375055);广东省自然科学基金资助项目(2023B1515020088);广东技术师范大学科研启动项目(2022SDKYA013)
DOI：10.13756/j.gtxyj.2025.250314
中图分类号： TN918收稿：2025-09-22，
修回：2025-10-20，
纸质出版：2025-12-10
- 稿件说明：
移动端阅览
安跃华，唐斌，刘江伟，等. 电光反馈混沌保密系统时延标签特征隐藏研究[J]. 光通信研究，2025(6): 250314.
An Y H, Tang B, Liu J W, et al. Research on the Time Delay Signature Concealment of Electro-Optic Feedback Chaotic Communication System[J]. Study on Optical Communications, 2025(6): 250314.
安跃华，唐斌，刘江伟，等. 电光反馈混沌保密系统时延标签特征隐藏研究[J]. 光通信研究，2025(6): 250314. DOI： 10.13756/j.gtxyj.2025.250314.
An Y H, Tang B, Liu J W, et al. Research on the Time Delay Signature Concealment of Electro-Optic Feedback Chaotic Communication System[J]. Study on Optical Communications, 2025(6): 250314. DOI： 10.13756/j.gtxyj.2025.250314.
摘要
【目的】
2
混沌激光保密通信通过硬件加密，具有高速率、长距离和与经典光纤信道相兼容的优势，可为高速光纤通信系统提供物理层安全保障。针对传统电光反馈混沌加密系统中环路时延泄漏而导致的安全性问题，文章提出了一种可隐藏电光反馈时延标签（TDS）特征的混沌保密光通信系统。
【方法】
2
通过耦合外部余弦信号进入电光反馈环路进行相位调制，利用余弦信号在自相关和延时互信息曲线中的周期性来掩盖原有电光反馈环路的TDS特征，避免环路时延物理参数被窃听者破解，进而充分保障了电光反馈加密结构的物理层安全。
【结果】
2
文章详细分析并对比了有无外部耦合信号及不同耦合比例和调制深度等关键物理参数对TDS特征隐藏的物理规律，仿真验证了一种28 Gbit/s开关键控调制信号经过电光反馈混沌保密通信系统的物理层加密和解密性能，并探明了收发端电光反馈环路时延失谐对混沌同步和系统通信性能的影响。在几种典型的窃听场景下，通过仅有余弦相位解密、色散补偿、或联合使用相位解密和色散补偿的窃听方式，探究了系统的抗窃听攻击性能。
【结论】
2
文章所提方法可有效隐藏电光反馈混沌加密系统的TDS特征，防止反馈环路时延泄漏，抵抗窃听者的非法攻击，为未来基于电光混沌保密通信系统的设计提供了一种新思路。
Abstract
【Objective】
2
Chaotic laser secure communication exhibits the advantages of high speed
long distance
and compatibility with classical optical fiber channels due to hardware encryption
which can provide physical layer security for high-speed optical fiber communication systems. In order to solve the physical security problem of feedback time delay leakage in conventional electro-optical feedback chaotic encryption systems
this paper proposes a secure optical communication system that can hide the characteristics of electro-optic feedback Time Delay Signature (TDS).
【Methods】
2
By coupling an external cosine signal into the electro-optic feedback loop for feedback modulation
the periodicity of the cosine signal in the autocorrelation or mutual delay information curve is employed to mask the TDS of the original electro-optical feedback loop
so as to guarantee the physical layer security of the electro-optical feedback encryption structure.
【Results】
2
The influence of key parameters such as the presence or absence of external coupling signals
coupling ratio
and modulation depth on TDS feature hiding is analyzed and compared in detail. The security and communication performances of a 28 Gbit/s on-off-keying modulated secure communication system are simulated and verified. The influence of feedback delay time detuning of the feedback loop on the synchronization and communication performance is also investigated. In several typical eavesdropping scenarios
the anti-eavesdropping attack performance is explored by cosine phase decryption
dispersion compensation or joint phase decryption and dispersion compensation eavesdropping.
【Conclusion】
2
The results show that the proposed method can effectively conceal the TDS characteristics of the electro-optic feedback encryption system
prevent the leakage of feedback loop delay time
and resist against various illegal eavesdropping attacks
which provides a new solution for the design of electro-optic chaotic encryption systems in future.
关键词
Keywords
references
Niu Z , Xie Y , Xu G , et al . Experimental Demonstration of Integrated Encryption and Communication over Optical Fiber [J ] . National Science Review , 2025 , 12 ( 7 ): nwaf112 .
王识 , 邢甜甜 , 王俊华 , 等 . 光纤通信物理层抗截获技术综述 [J ] . 光通信技术 , 2018 , 42 ( 12 ): 10 - 14 .
Wang S , Xing T T , Wang J H , et al . Overview of Anti-Interception Techniques for Physical Layer of Optical Fiber Communication [J ] . Optical Communication Technology , 2018 , 42 ( 12 ): 10 - 14 .
高欣 , 李苗 , 张燕玲 . 基于混沌映射的光纤通信物理层抗截获方法 [J ] . 光通信研究 , 2023 ( 2 ): 29 - 33 .
Gao X , Li M , Zhang Y L . Anti-Interception Method of Optical Fiber Communication Physical Layer based on Chaotic Mapping [J ] . Study on Optical Communications , 2023 ( 2 ): 29 - 33 .
Xie Y , Yang Z , Shi M , et al . Signal-to-Noise Ratio Degradation Analysis for Optoelectronic Feedback-based Chaotic Optical Communication Systems [J ] . Optics Letters , 2023 , 48 ( 19 ): 5005 - 5008 .
Lu Y , Wang H , Ji Y . A Time-Delay Signature Elimination and Broadband Electro-Optic Chaotic System with Enhanced Nonlinearity by Deep Learning [J ] . Optics Express , 2022 , 30 ( 11 ): 17698 - 17712 .
Zhang L , Huang W , Tang B , et al . Strategy for Attacking the Key Parameters of Electro-Optic Self-Feedback Phase Encryption System [J ] . Photonics , 2023 , 10 ( 4 ): 356 .
Lu Y , Wang H , Ji Y , et al . Security-Enhanced Electro-Optic Chaotic Communication System based on the Logistic Map Feedback and Dynamic Key [J ] . JOSA B , 2023 , 40 ( 5 ): 1131 - 1140 .
Bai J , Wang H , Ji Y . Time-Delay Signature Concealing Electro-Optic Chaotic System with Multiply Feedback Nonlinear Loops [J ] . Optics Express , 2021 , 29 ( 2 ): 706 - 718 .
Huang H , Li Z , Gao X , et al . An Enhanced Electro-Optic Chaos Secure Communication System Immune to Time Delay Signature Extraction [J ] . IEEE Photonics Journal , 2022 , 14 ( 1 ): 7209407 .
Gu W , Gao X , An Y , et al . Security-Enhanced Electro-Optic Mutual Injection Secure Communication Scheme with Time-Delay Signature Suppressing [J ] . IEEE Photonics Journal , 2023 , 15 ( 3 ): 7201208 .
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