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Simulations and measurements of polarization states changing in underwater laser transmission
Author(s): Buyu Guo; Guang Yuan; Jia Yu; Huiping Liu; Wenbin Xu; Rui Hou
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Paper Abstract

Scattering is the fundamental issue in the field of underwater optics, meanwhile polarization state is also a key feature in underwater laser communications, laser imaging, and underwater quantum optical communication. Aiming at this problem, a software package Geant4 is applied in the simulation, furthermore, an algorithm based on the basic Henyey-Greenstein phase functions and typical polarization Monte Carlo model is proposed, the algorithm is used to simulate the polarization state when the laser is propagating underwater at different concentrations of water or transmission length. At the same time, the experiment is tested in a sink whose length is 10m and the polarization state detector is a laser power meter with accuracy up to 10nW. In this paper, the change of polarization state is expressed by the depolarization ratio. The result of numerical simulation and experimental show the variation of polarization state with concentration and distance respectively, the simulation result of Geant4 is more ideal, due to different kinds of external factors the experimental results are roughly, however, the overall change trend of the two is consistent.

Paper Details

Date Published: 12 December 2018
PDF: 6 pages
Proc. SPIE 10850, Ocean Optics and Information Technology, 108500U (12 December 2018); doi: 10.1117/12.2505635
Show Author Affiliations
Buyu Guo, Ocean Univ. of China (China)
Guang Yuan, Ocean Univ. of China (China)
Jia Yu, Ocean Univ. of China (China)
Huiping Liu, Ocean Univ. of China (China)
Wenbin Xu, Ocean Univ. of China (China)
Rui Hou, Ocean Univ. of China (China)

Published in SPIE Proceedings Vol. 10850:
Ocean Optics and Information Technology
Xuelong Li; Lixin Wu; Jianquan Yao; Hao Yin; Renhe Zhang; Zhongliang Zhu, Editor(s)

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