卡塞格伦天线系统中部分相干拉盖尔高斯涡旋光束的光纤耦合

IF 1.2 4区 物理与天体物理 Q4 OPTICS
Jiawei Qiao, Jiajia Shen, Ping Jiang, Weinan Caiyang, Huajun Yang
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引用次数: 0

摘要

考虑到部分相干光束(PCB)在光通信中的重要性,研究了部分相干拉盖尔高斯涡旋光束(PCLGVB)通过卡塞格伦发射天线后与单模光纤的耦合。同时,还考虑了大气湍流和装配错位的影响。文中对 PCLGVB 通过卡塞格伦发射天线的传输进行了数学建模,并对耦合效率进行了数值计算。随着传播距离的增加,耦合效率呈上升趋势。同时,PCB 更能抵御大气湍流和错位带来的干扰。而对于 PCLGVB 与单模光纤之间的耦合,随着横向偏移或倾斜角度的增加,耦合效率在某些区间保持稳定,甚至出现异常增长,这可能为提高耦合效率提供了新思路。与完全对准的情况相比,横向偏移为 0、倾斜角为 6.5°时的耦合效率高达 21.35%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fiber coupling of partially coherent Laguerre Gaussian vortex beam in a Cassegrain antenna system
In consideration of the importance of the partially coherent beam (PCB) in optical communication, the coupling of partially coherent Laguerre Gaussian vortex beam (PCLGVB) with single-mode fiber after passing through a Cassegrain transmitting antenna is researched. Meanwhile, the effect of atmospheric turbulence and the assembly misalignments is also considered. In the paper, the transmission of a PCLGVB through a Cassegrain transmitting antenna is mathematically modeled and the coupling efficiency is numerically calculated. And as the propagation distance increases, the coupling efficiency shows an upward trend. In the meanwhile, the PCB is more resistant to the disruptions introduced by atmospheric turbulence and misalignments. And for the coupling between PCLGVB and the single-mode fiber, as the lateral offset or tilt angle increases, the coupling efficiency remains stable in some intervals, or even appears to grow anomalously, which may provide a new idea for enhancing the coupling efficiency. Compared to the case of perfect alignment, the lateral offset of 0 with a tilt angle of 6.5° has a higher coupling efficiency of 21.35%.
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来源期刊
Laser Physics
Laser Physics 物理-光学
CiteScore
2.60
自引率
8.30%
发文量
127
审稿时长
2.2 months
期刊介绍: Laser Physics offers a comprehensive view of theoretical and experimental laser research and applications. Articles cover every aspect of modern laser physics and quantum electronics, emphasizing physical effects in various media (solid, gaseous, liquid) leading to the generation of laser radiation; peculiarities of propagation of laser radiation; problems involving impact of laser radiation on various substances and the emerging physical effects, including coherent ones; the applied use of lasers and laser spectroscopy; the processing and storage of information; and more. The full list of subject areas covered is as follows: -physics of lasers- fibre optics and fibre lasers- quantum optics and quantum information science- ultrafast optics and strong-field physics- nonlinear optics- physics of cold trapped atoms- laser methods in chemistry, biology, medicine and ecology- laser spectroscopy- novel laser materials and lasers- optics of nanomaterials- interaction of laser radiation with matter- laser interaction with solids- photonics
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