The research of polarization feedback control system based on double Mach-Zehnder interferometer

被引：1

作者：

Wang, Yu Tian ^{[1
]}

Yuan, Rui Rong ^{[1
]}

Wang, Shu Tao ^{[1
]}

Gao, Xue ^{[1
]}

Li, Xue ^{[1
]}

机构：

[1] Yanshan Univ, Key Lab Measurement Technol & Instrumentat Hebei, Qinhuangdao 066004, Peoples R China

来源：

ADVANCED DESIGN TECHNOLOGY, PTS 1-3 | 2011年 / 308-310卷

关键词：

Double Mach - Zehnder interferometer; Fiber optical sensor; Polarization fading; Feedback control;

D O I：

10.4028/www.scientific.net/AMR.308-310.1751

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarization induced signal fading always has an influence up on the visibility of the interference stripe and the accuracy of system location in the distributed optical fiber oil &gas pipeline leak detection system. Base on distributed sensor system polarization characteristic, this paper analyses the visibility of the interference stripe with the changing of polarization. Designed a feedback control system based on double Mach-Zehnder is used to eliminate the input light polarization fading. This system can effectively suppress the polarization fading in fiber optical sensor, making interferometer fringe visibility tends to I and the equilibrium state of input light polarization always closes to the best input sate of interferometer.

引用

页码：1751 / 1754

页数：4

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