Research on sensitized Fiber Bragg Grating temperature sensor based on bimetal three-substrates-Reference-Cited by-同舟云学术

Research on sensitized Fiber Bragg Grating temperature sensor based on bimetal three-substrates

Published:2024-04-01 Issue:4 Volume:95 Page:
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:

Author:

Qiu Zhongchao¹²³^ORCID,Su Kai²^ORCID,Wang Xiaomei¹³^ORCID,Teng Yuntian¹³^ORCID

Affiliation:

1. Institute of Geophysics, China Earthquake Administration 1 , Beijing 100081, China

2. Institute of Disaster Prevention 2 , Sanhe 065201, China

3. Beijing Baijiatuan Earth Science National Observation and Research Station 3 , Beijing 100095, China

Abstract

Temperature is one of the most important physical quantities in the field of earthquake precursor observation. Aiming at the problem of low sensitivity in the Fiber Bragg Grating (FBG) temperature sensor, the sensitized FBG temperature sensor based on bimetal three-substrates is proposed. Through theoretical analysis of the bimetallic model, the structural parameters of the sensor are optimized, and the sensor is simulated and analyzed with ANSYS. Then, the sensor is developed according to the simulation results, and the temperature test system is built to test the performance of the sensor. The results show that the sensitivity of the temperature sensor is 49.3 pm/°C, which is about 4.9 times that of the bare FBG sensor, and the linearity is over 0.999. The research results provide a reference for developing the same type of sensors and further improving the sensitivity of FBG temperature sensors.

Funder

Science and Technology Innovation Program for Postgraduate students in IDP subsidized by Fundamental Research Funds for the Central Universities

National Key Research and Development Program of China

hebei key laboratory of seismic disaster instrument and monitoring technology

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0196836/19865237/045001_1_5.0196836.pdf

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