大气湍流下OAM光通信教学仿真实验设计  

Design of Simulation Experiment for OAM Optical Communication Teaching under Atmospheric Turbulence

作　　者：赵丽娟[1,2] 卜洋 徐志钮[1] 杨志[1] ZHAO Lijuan;BU Yang;XU Zhiniu;YANG Zhi(Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding 071003,Hebei,China;School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei,China)

机构地区：[1]华北电力大学河北省电力物联网技术重点实验室,河北保定071003 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《实验室研究与探索》2022年第8期134-138,共5页Research and Exploration In Laboratory

基　　金：教育部2020年产学合作协同育人项目(202002288044);教育部高校“双带头人”教师党支部书记工作室建设项目(802124);华北电力大学2020年优秀青年教师支持计划(20200601);华北电力大学“双一流”研究生人才培养(17112102)。

摘　　要：自由空间光通信(FSOC)具有通信容量大、信息传输快等优点,在大数据时代有着巨大的应用价值。轨道角动量(QAM)复用技术利用不同模式QAM光束之间的正交现象,可有效提高信道容量和频谱效率。采用随机相位屏模拟大气湍流,分析其对QAM复用通信系统的影响,设计大气湍流下QAM光通信教学仿真实验,学生通过Matlab,仿真不同模式的QAM光束及大气湍流模型,同时分析OAM光束经过大气湍流后的影响,让学生更好地掌握光通信系统理论知识架构,也为空间光通信实验教学与研究提供参考。Free-space optical communication has the advantages of large communication capacity and fast information transmission,and has huge application value in the future era of big data.The orbital angular momentum multiplexing technology utilizes the orthogonal phenomenon between the orbital angular momentum beams of different modes,which can effectively improve channel capacity and spectral efficiency.This paper uses random phase screen to simulate atmospheric turbulence,analyzes its influence on the orbital angular momentum multiplexing communication system,and designs a teaching simulation experiment of orbital angular momentum optical communication under atmospheric turbulence.Students use MATLAB to simulate different modes of orbital angular momentum beam and atmosphere turbulence model,while observing the influence of orbital angular momentum beams after passing through atmospheric turbulence,so that students can better grasp the theoretical knowledge structure of optical communication systems.This may provide a reference for the experimental teaching and research of space optical communication.

关 键 词：空间光通信 轨道角动量 大气湍流 随机相位屏 实验教学 

分 类 号：TN929.11[电子电信—通信与信息系统]