Eliminating polarization-induced lading in interferometric fiber-optic arrays by modulation

被引：0

作者：

Zhou, XD ^{[1
]}

Zhou, W ^{[1
]}

Tang, WZ ^{[1
]}

Ye, XF ^{[1
]}

机构：

[1] Zhejiang Univ, Informat & Elect Engn Dept, Hangzhou 310027, Peoples R China

来源：

OPTICAL AND FIBER OPTIC SENSOR SYSTEMS | 1998年 / 3555卷

关键词：

fiber optics; interferometer; polarization; modulation;

D O I：

10.1117/12.318155

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：

This paper puts forward a new method to overcome the polarization-induced fading (PIF) in conventional low-birefringence optical fiber constructed interferometric sensor arrays. By inducing high frequency modulation to the state of polarization at the output end of the array, the maximum PIF variation of each sensor's signal is 4.7dB or 6.3dB according to the selection of modulation signal. Combined with an electronic automatic gain control circuit or dividing the each sensor's signal by its visibility, each sensor's signal fading is recovered at the expense of a relevant signal/noise ratio degradation of 4.7dB or 6.3dB.

引用

页码：174 / 179

页数：6