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Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

The temperature and pressure of seawater are of great importance to investigate the environmental evolution for the research of ocean science. With this regard, we proposed and experimentally demonstrated a seawater temperature and pressure sensor realized by a polyimide (PI) tube-based Fabry-Perot...

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Autores principales: Zhang, Shengqi, Mei, Yongchang, Xia, Titi, Cao, Zihan, Liu, Zhengyong, Li, Zhaohui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269721/
https://www.ncbi.nlm.nih.gov/pubmed/35808474
http://dx.doi.org/10.3390/s22134979
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author Zhang, Shengqi
Mei, Yongchang
Xia, Titi
Cao, Zihan
Liu, Zhengyong
Li, Zhaohui
author_facet Zhang, Shengqi
Mei, Yongchang
Xia, Titi
Cao, Zihan
Liu, Zhengyong
Li, Zhaohui
author_sort Zhang, Shengqi
collection PubMed
description The temperature and pressure of seawater are of great importance to investigate the environmental evolution for the research of ocean science. With this regard, we proposed and experimentally demonstrated a seawater temperature and pressure sensor realized by a polyimide (PI) tube-based Fabry-Perot interferometer (FPI) together with a fiber Bragg grating (FBG). Benefiting from the higher thermo-optical coefficient and larger elasticity of polymer than the fused silica fiber, the sensitivity of the sensor is largely improved. The FBG is used to compensate the cross effect of the temperature. The measured temperature and pressure sensitivities of the sensor are 18.910 nm/°C and −35.605 nm/MPa, respectively. Furthermore, the temperature and pressure information measured by the sensor can be achieved simultaneously using the sensitivity matrix method. In addition, the proposed sensor has advantages of easy fabrication, compact size, as well as capability of multiplexing and long-distance measurement, making it competitive and promising during the marine monitoring.
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spelling pubmed-92697212022-07-09 Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring Zhang, Shengqi Mei, Yongchang Xia, Titi Cao, Zihan Liu, Zhengyong Li, Zhaohui Sensors (Basel) Article The temperature and pressure of seawater are of great importance to investigate the environmental evolution for the research of ocean science. With this regard, we proposed and experimentally demonstrated a seawater temperature and pressure sensor realized by a polyimide (PI) tube-based Fabry-Perot interferometer (FPI) together with a fiber Bragg grating (FBG). Benefiting from the higher thermo-optical coefficient and larger elasticity of polymer than the fused silica fiber, the sensitivity of the sensor is largely improved. The FBG is used to compensate the cross effect of the temperature. The measured temperature and pressure sensitivities of the sensor are 18.910 nm/°C and −35.605 nm/MPa, respectively. Furthermore, the temperature and pressure information measured by the sensor can be achieved simultaneously using the sensitivity matrix method. In addition, the proposed sensor has advantages of easy fabrication, compact size, as well as capability of multiplexing and long-distance measurement, making it competitive and promising during the marine monitoring. MDPI 2022-07-01 /pmc/articles/PMC9269721/ /pubmed/35808474 http://dx.doi.org/10.3390/s22134979 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Shengqi
Mei, Yongchang
Xia, Titi
Cao, Zihan
Liu, Zhengyong
Li, Zhaohui
Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title_full Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title_fullStr Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title_full_unstemmed Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title_short Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring
title_sort simultaneous measurement of temperature and pressure based on fabry-perot interferometry for marine monitoring
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269721/
https://www.ncbi.nlm.nih.gov/pubmed/35808474
http://dx.doi.org/10.3390/s22134979
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