摘要
为了补偿大气湍流对相干自由空间光通信的影响,本文研发了一种基于改进模拟退火算法的自适应光学系统,旨在优化系统的混频效率和降低误码率,从而提升整体系统性能。首先,介绍了含有无波前自适应光学部分的相干光通信系统的组成,并重点分析了混频效率和误码率等关键参数。随后,详细阐述了改进模拟退火算法的工作原理及其在自适应光学系统中的应用。为了验证算法的有效性,进行了数值模拟分析,并与传统算法进行了对比分析。最后,在实验平台上收集实际数据以进一步评估算法性能。实验结果表明:改进模拟退火算法相比于普通模拟退火算法,迭代次数减少50%的情况下,误码率降低到10^(-9),混频效率提高到0.9。改进模拟退火算法可以减少传统自适应光学系统的迭代次数,提高波前校正精度,满足通信系统的需求。
To compensate for atmospheric turbulence-induced wavefront distortion in coherent free-space optical communication,we develop an adaptive optical system based on the improved simulated annealing algorithm.The system seeks to optimize mixing efficiency and reduce the bit error rate,ultimately enhancing overall system performance.First,we describe the structure of a coherent optical communication system without a wavefront adaptive optics component,focusing on key parameters such as mixing efficiency and bit error rate.Next,the paper implements a detailed explanation of the working principles of the improved simulated annealing algorithm and its application in adaptive optical systems.To validate the proposed algorithm's effectiveness,numerical simulations are performed and compared against traditional algorithms.Finally,real-world data is collected from an experimental platform to further assess the algorithm's performance.Experimental results demonstrate that,in comparison to the standard simulated annealing algorithm,the improved simulated annealing algorithm reduces the iteration count by 50%,decreases the bit error rate to 10^(−9),and increases the mixing efficiency to 0.9.Overall,the improved simulated annealing algorithm effectively reduces the iteration count in traditional adaptive optical systems,enhances wavefront correction accuracy,and satisfies communication system requirements.
作者
李洪利
刘欣悦
杜博军
曹景太
张恒
LI Hong-li;LIU Xin-yue;DU Bo-jun;CAO Jing-tai;ZHANG Heng(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China;Unit 63850 of the People's Liberation Army,Baicheng 137001,China)
出处
《中国光学(中英文)》
北大核心
2025年第4期784-793,共10页
Chinese Optics
基金
国家重点研发计划(No.2023YFB3905703)
吉林省科技发展计划项目(No.20210101468JC)
中国科学院海洋大科学研究中心重点部署项目(No.COMS2020J09)。
关键词
波前校正
自适应光学
无波前传感
混频效率
误码率
wavefront correction
adaptive optics
wavefront sensor-less
mixing efficiency
bit error rate
作者简介
Corresponding author:张恒(1990-),男,山东聊城人,博士,副研究员,2015年于哈尔滨工业大学获得硕士学位,2022年于中国科学院大学获得博士学位,现为中国科学院长春光学精密机械与物理研究所副研究员,主要从事无波前传感自适应光学及光电探测技术方面的研究。E-mail:zhangheng@ciomp.ac.cn。
