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Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application

A diaphragm-free fiber-optic Fabry-Perot (FP) interferometric gas pressure sensor is designed and experimentally verified in this paper. The FP cavity was fabricated by inserting a well-cut fiber Bragg grating (FBG) and hollow silica tube (HST) from both sides into a silica casing. The FP cavity len...

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Autores principales: Liang, Hao, Jia, Pinggang, Liu, Jia, Fang, Guocheng, Li, Zhe, Hong, Yingping, Liang, Ting, Xiong, Jijun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948566/
https://www.ncbi.nlm.nih.gov/pubmed/29597325
http://dx.doi.org/10.3390/s18041011
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author Liang, Hao
Jia, Pinggang
Liu, Jia
Fang, Guocheng
Li, Zhe
Hong, Yingping
Liang, Ting
Xiong, Jijun
author_facet Liang, Hao
Jia, Pinggang
Liu, Jia
Fang, Guocheng
Li, Zhe
Hong, Yingping
Liang, Ting
Xiong, Jijun
author_sort Liang, Hao
collection PubMed
description A diaphragm-free fiber-optic Fabry-Perot (FP) interferometric gas pressure sensor is designed and experimentally verified in this paper. The FP cavity was fabricated by inserting a well-cut fiber Bragg grating (FBG) and hollow silica tube (HST) from both sides into a silica casing. The FP cavity length between the ends of the SMF and HST changes with the gas density. Using temperature decoupling method to improve the accuracy of the pressure sensor in high temperature environments. An experimental system for measuring the pressure under different temperatures was established to verify the performance of the sensor. The pressure sensitivity of the FP gas pressure sensor is 4.28 nm/MPa with a high linear pressure response over the range of 0.1–0.7 MPa, and the temperature sensitivity is 14.8 pm/°C under the range of 20–800 °C. The sensor has less than 1.5% non-linearity at different temperatures by using temperature decoupling method. The simple fabrication and low-cost will help sensor to maintain the excellent features required by pressure measurement in high temperature applications.
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spelling pubmed-59485662018-05-17 Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application Liang, Hao Jia, Pinggang Liu, Jia Fang, Guocheng Li, Zhe Hong, Yingping Liang, Ting Xiong, Jijun Sensors (Basel) Article A diaphragm-free fiber-optic Fabry-Perot (FP) interferometric gas pressure sensor is designed and experimentally verified in this paper. The FP cavity was fabricated by inserting a well-cut fiber Bragg grating (FBG) and hollow silica tube (HST) from both sides into a silica casing. The FP cavity length between the ends of the SMF and HST changes with the gas density. Using temperature decoupling method to improve the accuracy of the pressure sensor in high temperature environments. An experimental system for measuring the pressure under different temperatures was established to verify the performance of the sensor. The pressure sensitivity of the FP gas pressure sensor is 4.28 nm/MPa with a high linear pressure response over the range of 0.1–0.7 MPa, and the temperature sensitivity is 14.8 pm/°C under the range of 20–800 °C. The sensor has less than 1.5% non-linearity at different temperatures by using temperature decoupling method. The simple fabrication and low-cost will help sensor to maintain the excellent features required by pressure measurement in high temperature applications. MDPI 2018-03-28 /pmc/articles/PMC5948566/ /pubmed/29597325 http://dx.doi.org/10.3390/s18041011 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liang, Hao
Jia, Pinggang
Liu, Jia
Fang, Guocheng
Li, Zhe
Hong, Yingping
Liang, Ting
Xiong, Jijun
Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title_full Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title_fullStr Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title_full_unstemmed Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title_short Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application
title_sort diaphragm-free fiber-optic fabry-perot interferometric gas pressure sensor for high temperature application
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948566/
https://www.ncbi.nlm.nih.gov/pubmed/29597325
http://dx.doi.org/10.3390/s18041011
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