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Proceedings Paper

A low cost design to eliminate polarization induced phase shift for dual Mach-Zehnder fiber interferometer
Author(s): Rui Li; Sheng Liang; Qianzhe Liu; Wen Xiao
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Paper Abstract

In dual Mach-Zehnder interferometer (DMZI) system, polarization induced phase shift (PIPS) leads to a big location error. Traditional approaches adopt polarization controller (PC) to eliminate PIPS by controlling polarization state (PS) of light source. Through establishing the influence model of input light PS and equivalent polarization parameters of sensing cable on interference signals, an approach using a simplified polarization controller (PC) to obtain high location accuracy is proposed. The simplified PC is composed of a polarizer and a fiber-fused half-wave plate and can provide a linearly polarized light with azimuth angle controlled. Simulation and experiment indicate that the proposed method and PC design not only has capability of eliminating PIPS, but also has the benefits of low cost and easy control.

Paper Details

Date Published: 22 August 2015
PDF: 7 pages
Proc. SPIE 9656, International Symposium on Photonics and Optoelectronics 2015, 965609 (22 August 2015); doi: 10.1117/12.2197578
Show Author Affiliations
Rui Li, Beihang Univ. (China)
Sheng Liang, Beijing Jiaotong Univ. (China)
Qianzhe Liu, Beijing Linkwise Technology and Technology Co., Ltd. (China)
Wen Xiao, Beihang Univ. (China)

Published in SPIE Proceedings Vol. 9656:
International Symposium on Photonics and Optoelectronics 2015
Zhiping Zhou, Editor(s)

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