Intelligent orbital angular momentum recognition of a scattered vortex beam

被引：0
|
作者：
Situ GuoHai [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
来源：
SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA | 2022年 / 52卷 / 06期
关键词：
orbital angular momentum; laser speckle; orthogonal polarization; fiber communication; deep learning; TOPOLOGICAL CHARGE; TRANSMISSION; FIBERS; LIGHT;
D O I：
10.1360/SSPMA-2022-0076
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
It is well known that scattering of coherent light produces speckle. So does a coherent vortex beam when it propagates through a segment of a multi-mode fiber. While the speckle field contains a number of phase singularities, the problem of recognition of the orbital angular momentum of the incident vortex beam from the output speckle becomes significantly important for both the study of vortex beams and mode division multiplexing. Deep learning is demonstrated to be an efficient approach to address this problem.
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页数：3
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