摘要
部分相干艾里光束的自聚焦特性可有效抑制海洋湍流对空间光与光纤耦合性能造成负面影响。根据广义Huygens-Fresnel原理和部分相干光交叉谱密度函数,推导海洋湍流中部分相干艾里光束-少模(四模)光纤耦合效率的解析解。通过数值仿真分析光源参数、耦合参数,以及海洋湍流强度对耦合效率的影响。结果表明:耦合效率随着光源波长的增大、初始半径的增大、截断因子的增大,以及相干长度的减小而逐渐减小,随海洋湍流的增强逐渐减小;并在不同传输距离下,给出了最佳耦合参数,使得部分相干艾里光束与四模光纤的耦合达到最佳效果。
With the characteristics selffocusing,the partially coherent Airy beam can efficiently limit the adverse effects of ocean turbulence,which negatively affects the coupling performance of space light and fiber.In this paper,the generalized HuygensFresnel principle and the partial coherent optical crossspectral density function are used to derive the analytical expression of the coupling efficiency of partially coherent Airy beamfewmode(fourmode)fiber through ocean turbulence.The effects of light source parameters,coupling parameters and ocean turbulence intensity on coupling efficiency are numerically analyzed.The results show that the coupling efficiency gradually decreases with the increase of wavelength,initial radius,truncation factor and coherence length,and gradually decreases with the enhancement of ocean turbulence.At different transmission distances,the best coupling parameters are given,so that the coupling of partially coherent Airy beams and fourmode fibers achieves the best effect.
作者
雷思琛
张荣荣
吴鹏飞
谭振坤
王姣
Lei Sichen;Zhang Rongrong;Wu Pengfei;Tan Zhenkun;Wang Jiao(School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Xi’an Key Laboratory of Wireless Optical Communication and Network Research,Xi’an 710048,Shaanxi,China;Faculty of Optoelectronic Engineering,Xi’an Technological University,Xi’an 710021,Shaanxi,China;School of Electronic Information and Artificial Intelligence,Shaanxi University of Science and Technology,Xi’an 710021,Shaanxi,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2024年第13期162-169,共8页
Laser & Optoelectronics Progress
基金
国家自然科学基金(62001363,62101313)
陕西省教育厅服务地方专项计划项目(20JC027)
陕西省科技厅重点研发计划-工业领域一般项目(2022GY-100)
陕西省科协青年人才支持项目(20220142)
陕西省科技成果转移与推广计划项目(2020CGXNG-041)
西安市高校院所科技人员服务企业项目(22GXFW0074,22GXFW0004,22GXFW0050)
碑林区2023年应用技术研发储备工程项目(GX2342)
陕西省高校青年创新团队项目。
关键词
海洋湍流
部分相干艾里光束
少模光纤
耦合效率
oceanic turbulence
partially coherent Airy beams
fewmode fiber
coupling efficiency
