Simultaneous measurement of orbital angular momentum spectra in a turbulent atmosphere without probe beam compensation

被引：14
|
作者：
Zhang, Hui [1 ,2 ]
Zheng, Wenjie [1 ,2 ]
Zheng, Guochen [1 ,2 ]
Fu, Peng [3 ]
Qu, Jun [4 ]
Hoenders, Bernhard J. [5 ]
Cai, Yangjian [1 ,2 ,6 ]
Yuan, Yangsheng [1 ,2 ]
机构：
[1] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250014, Peoples R China
[2] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Key Lab Opt & Photon Device, Jinan 250014, Peoples R China
[3] Chizhou Univ, Coll Mech & Elect Engn, Chizhou, Anhui, Peoples R China
[4] Anhui Normal Univ, Coll Phys & Elect Informat, Anhui Prov Key Lab Optoelect Mat Sci & Technol, Wuhu 241000, Peoples R China
[5] Univ Groningen, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands
[6] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 19期
基金：
中国国家自然科学基金;
关键词：
COMMUNICATION; LIGHT; LINK;
D O I：
10.1364/OE.440147
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In free-space optical (FSO) communications, the orbital angular momentum (OAM) multiplexing/demultiplexing of Bessel beams perturbed by atmospheric turbulence is of great significance. We used the Gerchberg-Saxton algorithm without a beacon beam to compensate for the aberrant helical phase of the Bessel beam distorted by the turbulent atmosphere. The optical vortex Dammann axicon grating was applied for the simultaneous measurement of the intensities of the demodulated spectra of the OAM modes of the Bessel beams disturbed by atmospheric turbulence. The experimental results demonstrate that the distorted phase of the Bessel beam can be compensated and the mode purity of the target OAM mode is enhanced from 0.85 to 0.92 in case of weak turbulence. Our results will improve the quality of the OAM modes of Bessel beam (de)multiplexing in FSO communication systems. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：30666 / 30674
页数：9
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