Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction

Li ZOU; Le WANG; Shi-bing ZHANG; Sheng-mei ZHAO

doi:10.11959/j.issn.1000-436x.2015264

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Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction

academic paper | 更新时间：2024-06-05

- Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction
- Journal on Communications Vol. 36, Issue 10, Pages: 76-84(2015)
- 作者机构：
  
  1. 南京邮电大学通信与信息工程学院，江苏南京 210003
  2. 南通大学电子信息学院，江苏南通 226019
  3. 南京邮电大学宽带无线通信与传感网技术教育部重点实验室，江苏南京 210003
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61371111);The National Natural Science Foundation of China(61371112);The National Natural Science Foundation of China(61475075);The Specialized Research Fund for the Doctoral Program of Higher Education of China(20123223110003);The Jiangsu Province Postgraduate Innovation Research Plan of China(CXZZ13_0489)
- DOI：10.11959/j.issn.1000-436x.2015264
  CLC： TN929.12
- Online First：2015-10，
  
  Published：25 October 2015
- 稿件说明：
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Li ZOU, Le WANG, Shi-bing ZHANG, et al. Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction[J]. Journal on Communications, 2015, 36(10): 76-84.
DOI：

Li ZOU, Le WANG, Shi-bing ZHANG, et al. Compensation of orbital-angular-momentum multiplexed communication system with wavefront correction[J]. Journal on Communications, 2015, 36(10): 76-84. DOI： 10.11959/j.issn.1000-436x.2015264.

摘要

基于轨道角动量(OAM

orbital angular momentum)复用自由空间光(FSO

free-space optical)通信系统不可避免地受到大气湍流的干扰。针对OAM复用通信系统，提出一种基于Gerchberg-Saxton相位校正的大气湍流干扰影响补偿方法。利用Gerchberg-Saxton相位恢复算法校正由大气湍流导致的OAM态复用光波前相位扭曲。数值仿真结果证实，该方法很好地抑制了大气湍流引起的 OAM 态复用串扰。在大气湍流折射率结构指数常数

m时，系统误码率比没有使用Gerchberg-Saxton算法的要下降2到3个数量级。

Abstract

It was shown that the quality of free-space optical communication system using OAM(orbital angular momentum)multiplexing was inevitably degraded by AT(atmospheric turbulence).A wavefront phase correction based on Gerchberg-Saxton algorithm to mitigate the wave front phase distortion of the OAM-multiplexed system transmitting through AT was proposed.The simulation results show that the crosstalk caused by AT decreases by using the proposed scheme.When the refractive index structure constant of AT

is lower than

the BER(bit error rate)performance is decreased by two or

three orders of magnitude with the proposed scheme.

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Keywords

references

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