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
收藏
页码：1751 / 1754
页数：4
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