异常涡旋光束在吸收性海洋湍流中的传输特性研究  

Study on the transmission characteristics of anomalous vortex beams in absorptive ocean turbulence

作　　者：刘涛[1,2,3] 吴彤 赵硕 李斌 张荣香 刘晨霞[1,2,3] LIU Tao;WU Tong;ZHAO Shuo;LI Bin;ZHANG Rongxiang;LIU Chenxia(Department of Electronic and Communication Engineering,North China Electric Power University,Baoding Hebei 071003,China;Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding Hebei 071003,China;Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology,North China Electric Power University,Baoding Hebei 071003,China;College of Physics Science and Technology,Hebei University,Baoding Hebei 071002,China)

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003 [2]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 [3]华北电力大学保定市光纤传感与光通信技术重点实验室,河北保定071003 [4]河北大学物理科学与技术学院,河北保定071002

出　　处：《光通信技术》2024年第5期80-85,共6页Optical Communication Technology

基　　金：国家自然科学基金(批准号:62071180)资助;中央高校基本科研业务费专项基金(编号:2020MS099)资助;华北电力大学研究生思政课程及课程思政建设项目资助。

摘　　要：为了分析海水的吸收和湍流特性对涡旋光束传输性能影响,在同时考虑海水的吸收效应和湍流效应的基础上,推导出了异常涡旋光束的轨道角动量(OAM)模式探测概率的解析表达式,并详细讨论了吸收性湍流海水对异常涡旋光束的螺旋相位谱、探测概率以及串扰概率的影响。仿真结果表明:海水的吸收效应不可忽略,它会导致探测概率下降;吸收性海洋湍流会导致螺旋相位谱扩展,并且随着OAM模式数的增加,螺旋相位谱的扩展程度变大;随着海洋湍流的温度方差耗散率、温度与盐度贡献比的减小,以及湍流动能耗散率的增大,OAM模式的探测概率增大,串扰概率减小。In order to analyze the impact of the absorption and turbulence characteristics of seawater on the transmission performance of vortex beams,an analytical expression for the detection probability of the orbital angular momentum(OAM)mode of anomalous vortex beams is derived,taking into account both the absorption and turbulence effects of seawater.The influence of absorbing turbulent seawater on the spiral phase spectrum,detection probability,and crosstalk probability of anomalous vortex beams is discussed in detail.The simulation results indicate that the absorption effect of seawater cannot be ignored,as it can lead to a decrease in detection probability.Absorbing ocean turbulence can lead to the expansion of the spiral phase spectrum,and as the number of OAM modes increases,the degree of expansion of the spiral phase spectrum becomes greater.As the temperature variance dissipation rate,temperature salinity contribution ratio,and turbulence energy dissipation rate of ocean turbulence decrease,the detection probability of OAM mode increases and the crosstalk probability decreases.

关 键 词：异常涡旋光束 海水吸收 海洋湍流 探测概率 

分 类 号：TN929.1[电子电信—通信与信息系统]