An Elimination Method of Polarization-Induced Phase Shift and Fading in Dual Mach-Zehnder Interferometry Disturbance Sensing System

被引：60

作者：

Chen, Qinnan ^{[1
]}

Liu, Tiegen ^{[1
]}

Liu, Kun ^{[1
]}

Jiang, Junfeng ^{[1
]}

Ding, Zhenyang ^{[1
]}

Zhang, Lei ^{[2
]}

Li, Yu ^{[1
]}

Pan, Liang ^{[1
]}

Ma, Chunyu ^{[1
]}

机构：

[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Comp Sci & Technol, Tianjin 300072, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2013年 / 31卷 / 19期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Distributed detection; optical fiber polarization; optimization methods; vibration measurement; INPUT-POLARIZATION;

D O I：

10.1109/JLT.2013.2276942

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We proposed an improved polarization control method to reduce polarization-induced phase shift (PIPS) and polarization-induced fading (PIF) in a dual Mach-Zehnder interferometry (DMZI) disturbance sensing system. PIPS and PIF will seriously affect the positioning accuracy of the DMZI sensor. This polarization control method uses two PCs to control the state of polarization at the inputs of clockwise Mach-Zehnder interferometer and counter-clockwise Mach-Zehnder interferometer, respectively, based on chaotic particle swarm optimization algorithm, which has advantages of high speed and easy implementation. We experimentally demonstrated that the polarization method can overcome the effect of PIPS and PIF, improve the positioning accuracy of the DMZI sensor efficiently with positioning error of +/- 20 m after polarization control. Compared with the traditional polarization control method in DMZI based on the criterion of visibility, the positioning error of the sensor using our proposed method has been reduced at least an order of magnitude.

引用

页码：3135 / 3141

页数：7

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