基于光域补偿的远距离光混沌同步  

Long-Range Optical Chaos Synchronization Based on Optical Domain Compensation

作　　者：张宇坤 李沼云 陶智勇[1] 樊亚仙 Zhang Yukun;Li Zhaoyun;Tao Zhiyong;Fan Yaxian(Guangxi Key Laboratory of Wireless Windband Communication and Signal Processing,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;The 34th Research Institute of China Electronics Technology Group Corporation,Guilin 541004,Guangxi,China)

机构地区：[1]桂林电子科技大学广西无线宽带通信与信号处理重点实验室,广西桂林541004 [2]中国电子科技集团公司第三十四研究所,广西桂林541004

出　　处：《激光与光电子学进展》2023年第17期152-158,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(12064005);广西自然科学基金(2021GXNSFDA075006,2021GXNS-FAA220086);桂林电子科技大学研究生教育创新计划资助项目(2021YCXS030)。

摘　　要：光混沌信号受限于光纤中的色散和非线性效应,难以实现远距离同步。同时,由于光注入混沌同步采用纯光域信号处理,无法与现有通信系统中的电域非线性补偿融合。因此,从非线性薛定谔方程出发,提出色散管理与基于光域的非线性管理相融合的技术方案,实现激光混沌远距离同步。然后,详细研究了不同传输距离、不同注入强度下的同步和传输特性。结果表明,在传输距离为1000 km、注入强度为0.5 mW情况下,系统能够实现信息速率为1 Gb/s的保密通信,同步载波相关系数能够达到0.97以上。Because of dispersion and nonlinear effects in optical fibers,chaotic signals are difficult to obtain long-range synchronization.Meanwhile,due to the characteristics of pure optical domain signal processing used for optical injection chaos synchronization,it cannot be fused with existing communication systems'electric domain nonlinear compensation.As a result,this paper proposes a technical solution for realizing laser chaotic long-distance synchronization by combining dispersion management with optical domain-based nonlinear management based on the NLS equation.The synchronization and transmission characteristics at various transmission distances and different injection intensities are studied in detail.The findings demonstrate that the system is capable of achieving secure communication at a 1 Gb/s information rate,1000 km of transmission distance,and 0.5 mW of injection intensity.The synchronous carrier correlation coefficient can exceed 0.97.

关 键 词：光通信 光混沌同步 非线性补偿 光域补偿 远距离传输 

分 类 号：TN012[电子电信—物理电子学]