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Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement

In this work, we proposed a sensitivity-enhanced temperature sensor, a compact harmonic Vernier sensor based on an in-fiber Fabry-Perot Interferometer (FPI), with three reflective interfaces for the measurement of gas temperature and pressure. FPI consists of air and silica cavities formulated by si...

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Main Authors: Dan, Jinxiao, Dang, Wenjie, Li, Zeren, Nan, Pengyu, Xin, Guoguo, Lim, Kok Sing, Ahmad, Harith, Yang, Hangzhou
Format: Article
Published: MDPI 2023
Subjects:
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/38332/
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spelling my.um.eprints.383322023-06-26T03:02:15Z http://eprints.um.edu.my/38332/ Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement Dan, Jinxiao Dang, Wenjie Li, Zeren Nan, Pengyu Xin, Guoguo Lim, Kok Sing Ahmad, Harith Yang, Hangzhou QD Chemistry TK Electrical engineering. Electronics Nuclear engineering In this work, we proposed a sensitivity-enhanced temperature sensor, a compact harmonic Vernier sensor based on an in-fiber Fabry-Perot Interferometer (FPI), with three reflective interfaces for the measurement of gas temperature and pressure. FPI consists of air and silica cavities formulated by single-mode optical fiber (SMF) and several short hollow core fiber segments. One of the cavity lengths is deliberately made larger to excite several harmonics of the Vernier effect that have different sensitivity magnifications to the gas pressure and temperature. The spectral curve could be demodulated using a digital bandpass filter to extract the interference spectrum according to the spatial frequencies of resonance cavities. The findings indicate that the material and structural properties of the resonance cavities have an impact on the respective temperature sensitivity and pressure sensitivity. The measured pressure sensitivity and temperature sensitivity of the proposed sensor are 114 nm/MPa and 176 pm/degrees C, respectively. Therefore, the proposed sensor combines ease of fabrication and high sensitivity, making it great potential for practical sensing measurements. MDPI 2023-04 Article PeerReviewed Dan, Jinxiao and Dang, Wenjie and Li, Zeren and Nan, Pengyu and Xin, Guoguo and Lim, Kok Sing and Ahmad, Harith and Yang, Hangzhou (2023) Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement. Sensors, 23 (8). ISSN 1424-8220, DOI https://doi.org/10.3390/s23084142 <https://doi.org/10.3390/s23084142>. 10.3390/s23084142
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
spellingShingle QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
Dan, Jinxiao
Dang, Wenjie
Li, Zeren
Nan, Pengyu
Xin, Guoguo
Lim, Kok Sing
Ahmad, Harith
Yang, Hangzhou
Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
description In this work, we proposed a sensitivity-enhanced temperature sensor, a compact harmonic Vernier sensor based on an in-fiber Fabry-Perot Interferometer (FPI), with three reflective interfaces for the measurement of gas temperature and pressure. FPI consists of air and silica cavities formulated by single-mode optical fiber (SMF) and several short hollow core fiber segments. One of the cavity lengths is deliberately made larger to excite several harmonics of the Vernier effect that have different sensitivity magnifications to the gas pressure and temperature. The spectral curve could be demodulated using a digital bandpass filter to extract the interference spectrum according to the spatial frequencies of resonance cavities. The findings indicate that the material and structural properties of the resonance cavities have an impact on the respective temperature sensitivity and pressure sensitivity. The measured pressure sensitivity and temperature sensitivity of the proposed sensor are 114 nm/MPa and 176 pm/degrees C, respectively. Therefore, the proposed sensor combines ease of fabrication and high sensitivity, making it great potential for practical sensing measurements.
format Article
author Dan, Jinxiao
Dang, Wenjie
Li, Zeren
Nan, Pengyu
Xin, Guoguo
Lim, Kok Sing
Ahmad, Harith
Yang, Hangzhou
author_facet Dan, Jinxiao
Dang, Wenjie
Li, Zeren
Nan, Pengyu
Xin, Guoguo
Lim, Kok Sing
Ahmad, Harith
Yang, Hangzhou
author_sort Dan, Jinxiao
title Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
title_short Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
title_full Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
title_fullStr Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
title_full_unstemmed Compact harmonic vernier sensor based on an in-fiber FPI with three reflector system for simultaneous gas pressure and temperature measurement
title_sort compact harmonic vernier sensor based on an in-fiber fpi with three reflector system for simultaneous gas pressure and temperature measurement
publisher MDPI
publishDate 2023
url http://eprints.um.edu.my/38332/
_version_ 1769842722812723200
score 13.211869

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