Microwave interrogated large core fused silica fiber Michelson interferometer for strain sensing

被引：55

作者：

Hua, Liwei ^{[1
]}

Song, Yang ^{[1
]}

Huang, Jie ^{[1
]}

Lan, Xinwei ^{[1
]}

Li, Yanjun ^{[1
]}

Xiao, Hai ^{[1
]}

机构：

[1] Clemson Univ, COMSET, Holcombe Dept Elect & Comp Engn, Clemson, SC 29634 USA

来源：

APPLIED OPTICS | 2015年 / 54卷 / 24期

基金：

美国国家科学基金会;

关键词：

GRATING SENSORS; OPTICAL-FIBER; MULTIMODE FIBER; INTERFERENCE; SYSTEMS; MODE;

D O I：

10.1364/AO.54.007181

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A Michelson-type large core optical fiber sensor has been developed, which is designed based on the optical carrier- based microwave interferometry technique, and fabricated by using two pieces of 200-mu m diameter fused silica core fiber as two arms of the Michelson interferometer. The interference fringe pattern caused by the optical path difference of the two arms is interrogated in the microwave domain, where the fringe visibility of 40 dB has easily been obtained. The strain sensing at both room temperature and high temperatures has been demonstrated by using such a sensor. Experimental results show that this sensor has a linear response to the applied strain, and also has relatively low temperature-strain cross talk. The dopant-free quality of the fused silica fiber provides high possibility for the sensor to have promising strain sensing performance in a high temperature environment. (C) 2015 Optical Society of America

引用

页码：7181 / 7187

页数：7