Stochastic parallel gradient descent laser beam control algorithm for atmospheric compensation in free space optical communication

被引：34
|
作者：
Cao, Jingtai [1 ,2 ]
Zhao, Xiaohui [1 ]
Li, Zhaokun [1 ]
Liu, Wei [1 ]
Song, Yang [2 ,3 ]
机构：
[1] Jilin Univ, Coll Commun Engn, Changchun 130012, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
OPTIK | 2014年 / 125卷 / 20期
基金：
中国国家自然科学基金;
关键词：
FSO communication; Atmospheric compensation; Fiber coupling; SPGD; FIBER-COUPLING EFFICIENCY; ADAPTIVE OPTICS; TURBULENCE; SYSTEMS;
D O I：
10.1016/j.ijleo.2014.06.127
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Atmospheric turbulence seriously degrades the performance of free space optical (FSO) communication systems, especially the coupling efficiency. In this paper, we propose a stochastic parallel gradient descent (SPGD) algorithm to compensate the atmospheric turbulence in FSO communication system. Theoretical analysis and work flow of the algorithm are given. Both simulation and experimental results indicate that the coupling efficiency can be increased from 12% to more than 80% after 270 iterations or more than threefold, which implies a significant improvement of the performance. (C) 2014 Elsevier GmbH. All rights reserved.
引用
收藏
页码：6142 / 6147
页数：6
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