Phase correction for a distorted orbital angular momentum beam using a Zernike polynomials-based stochastic-parallel-gradient-descent algorithm

被引：107

作者：

Xie, Guodong ^{[1
]}

Ren, Yongxiong ^{[1
]}

Huang, Hao ^{[1
]}

Lavery, Martin P. J. ^{[2
]}

Ahmed, Nisar ^{[1
]}

Yan, Yan ^{[1
]}

Bao, Changjing ^{[1
]}

Li, Long ^{[1
]}

Zhao, Zhe ^{[1
]}

Cao, Yinwen ^{[1
]}

Willner, Moshe ^{[1
]}

Tur, Moshe ^{[3
]}

Dolinar, Samuel J. ^{[4
]}

Boyd, Robert W. ^{[2
,5
,6
]}

Shapiro, Jeffrey H. ^{[7
]}

Willner, Alan E. ^{[1
]}

机构：

[1] Univ So Calif, Dept Elect Engn, Los Angeles, CA 90089 USA

[2] Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[3] Tel Aviv Univ, Sch Elect Engn, IL-69978 Ramat Aviv, Israel

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[5] Univ Rochester, Inst Opt, Dept Phys & Astron, Rochester, NY 14627 USA

[6] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[7] MIT, Res Lab Elect, Cambridge, MA 02139 USA

来源：

OPTICS LETTERS | 2015年 / 40卷 / 07期

关键词：

SPACE OPTICAL LINK; WAVE-FRONT SENSOR; ATMOSPHERIC-TURBULENCE; ADAPTIVE-OPTICS; QUANTUM STATES; LIGHT; PROPAGATION; COMMUNICATION; COMPENSATION; MODES;

D O I：

10.1364/OL.40.001197

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A stochastic-parallel-gradient-descent algorithm (SPGD) based on Zernike polynomials is proposed to generate the phase correction pattern for a distorted orbital angular momentum (OAM) beam. The Zernike-polynomial coefficients for the correction pattern are obtained by monitoring the intensity profile of the distorted OAM beam through an iteration-based feedback loop. We implement this scheme and experimentally show that the proposed approach improves the quality of the turbulence-distorted OAM beam. Moreover, we apply phase correction patterns derived from a probe OAM beam through emulated turbulence to correct other OAM beams transmitted through the same turbulence. Our experimental results show that the patterns derived this way simultaneously correct multiple OAM beams propagating through the same turbulence, and the crosstalk among these modes is reduced by more than 5 dB. (C) 2015 Optical Society of America

引用

页码：1197 / 1200

页数：4

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