Extensible multi-wavelength interrogation method for arbitrary cavities in low-fineness multi-cavity Fabry-Pérot interferometric sensors

被引：1

作者：

Zhao, Aihao ^{[1
]}

Ren, Qianyu ^{[1
]}

Su, Chengxin ^{[1
]}

Tu, Jiacheng ^{[1
]}

Huang, Yuhao ^{[1
]}

An, Guowen ^{[1
]}

Liu, Jia ^{[1
]}

Jia, Pinggang ^{[1
]}

Xiong, Jijun ^{[1
]}

机构：

[1] North Univ China, State Key Lab Dynam Measurement Technol, Taiyuan 030051, Peoples R China

来源：

OPTICS EXPRESS | 2024年 / 32卷 / 04期

基金：

中国国家自然科学基金; 山西省青年科学基金;

关键词：

FABRY-PEROT SENSOR; FIBER; TEMPERATURE; PRESSURE;

D O I：

10.1364/OE.515276

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To the best of our knowledge, a novel extensible multi -wavelength (EMW) method to interrogate arbitrary cavities in low -fineness fiber-optic multi -cavity Fabry-P & eacute;rot interferometric (LFMFPI) sensors is proposed and experimentally demonstrated. Based on the derived model of the LFMFPI sensor with any amount of cascaded cavities, theoretically, variation in each cavity of a LFMFPI sensor can be extracted simultaneously once the necessary parameters are acquired in advance. The feasibility of this method is successfully demonstrated in simulations and experiments utilizing LFMFPI sensors. In experiments with the LFMFPI sensor, optical path differences (OPD) of 78 nm and 2.95 mu m introduced by temperature variation in two cavities, and the OPD induced by vibration with the amplitude from 5.891 nm to 38.116 nm were extracted, respectively. The EMW method is potential in multi -parameter sensing for pressure, vibration, and temperature. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：6141 / 6153

页数：13