Compensation method for signal drift induced by time delay difference in phase retrieval algorithm for distributed fiber interferometry using asymmetric 3 x 3 coupler

被引：2

作者：

Li, Churui ^{[1
]}

Ye, Zi ^{[1
]}

Yan, Yuze ^{[1
]}

Wang, Chao ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2020年 / 62卷 / 03期

关键词：

3; x; coupler; fiber interferometer; optic-fiber sensing; phase retrieval; SCHEME;

D O I：

10.1002/mop.32161

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：

Phase retrieval algorithm is an important part of optic-fiber interferometry system. In this article, drift of the retrieved signal caused by the time delay difference between two interference signals from asymmetric 3 x 3 coupler is theoretically analyzed, and a compensation algorithm to solve this problem is proposed. Through simulation and experiment in real sensing system, the compensation algorithm can effectively eliminate the signal drift induced by the time delay difference, and enhance the accuracy of the signal in real sensing system.

引用

页码：1134 / 1144

页数：11