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High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating

We propose and demonstrate a novel high-temperature-resistant vector accelerometer, consisting of a ring cavity laser and sensing probe (i.e., fiber Bragg gratings (FBGs)) inscribed in a seven-core fiber (SCF) by using the femtosecond laser direct writing technique. A ring cavity laser serves as a l...

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Autores principales: Xiao, Xunzhou, He, Jun, Xu, Xizhen, Chen, Runxiao, Du, Bin, Chen, Yanping, Liu, Shen, Fu, Cailing, Wang, Yiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9460730/
https://www.ncbi.nlm.nih.gov/pubmed/36080917
http://dx.doi.org/10.3390/s22176459
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author Xiao, Xunzhou
He, Jun
Xu, Xizhen
Chen, Runxiao
Du, Bin
Chen, Yanping
Liu, Shen
Fu, Cailing
Wang, Yiping
author_facet Xiao, Xunzhou
He, Jun
Xu, Xizhen
Chen, Runxiao
Du, Bin
Chen, Yanping
Liu, Shen
Fu, Cailing
Wang, Yiping
author_sort Xiao, Xunzhou
collection PubMed
description We propose and demonstrate a novel high-temperature-resistant vector accelerometer, consisting of a ring cavity laser and sensing probe (i.e., fiber Bragg gratings (FBGs)) inscribed in a seven-core fiber (SCF) by using the femtosecond laser direct writing technique. A ring cavity laser serves as a light source. Three FBGs in the outer cores of SCF, which are not aligned in a straight line, are employed to test the vibration. These three FBGs have 120° angular separation in the SCF, and hence, vibration orientation and acceleration can be measured simultaneously. Moreover, the FBG in the central core was used as a reflector in the ring cavity laser, benefiting to resist external interference factors, such as temperature and strain fluctuation. Such a proposed accelerometer exhibits a working frequency bandwidth ranging from 4 to 68 Hz, a maximum sensitivity of 54.2 mV/g, and the best azimuthal angle accuracy of 0.21° over a range of 0–360°. Furthermore, we investigated the effect of strain and temperature on the performance of this sensor. The signal-to-noise ratio (SNR) only exhibits a fluctuation of ~1 dB in the range (0, 2289 με) and (50 °C, 1050 °C). Hence, such a vector accelerometer can operate in harsh environments, such as in aerospace and a nuclear reactor.
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spelling pubmed-94607302022-09-10 High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating Xiao, Xunzhou He, Jun Xu, Xizhen Chen, Runxiao Du, Bin Chen, Yanping Liu, Shen Fu, Cailing Wang, Yiping Sensors (Basel) Communication We propose and demonstrate a novel high-temperature-resistant vector accelerometer, consisting of a ring cavity laser and sensing probe (i.e., fiber Bragg gratings (FBGs)) inscribed in a seven-core fiber (SCF) by using the femtosecond laser direct writing technique. A ring cavity laser serves as a light source. Three FBGs in the outer cores of SCF, which are not aligned in a straight line, are employed to test the vibration. These three FBGs have 120° angular separation in the SCF, and hence, vibration orientation and acceleration can be measured simultaneously. Moreover, the FBG in the central core was used as a reflector in the ring cavity laser, benefiting to resist external interference factors, such as temperature and strain fluctuation. Such a proposed accelerometer exhibits a working frequency bandwidth ranging from 4 to 68 Hz, a maximum sensitivity of 54.2 mV/g, and the best azimuthal angle accuracy of 0.21° over a range of 0–360°. Furthermore, we investigated the effect of strain and temperature on the performance of this sensor. The signal-to-noise ratio (SNR) only exhibits a fluctuation of ~1 dB in the range (0, 2289 με) and (50 °C, 1050 °C). Hence, such a vector accelerometer can operate in harsh environments, such as in aerospace and a nuclear reactor. MDPI 2022-08-27 /pmc/articles/PMC9460730/ /pubmed/36080917 http://dx.doi.org/10.3390/s22176459 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 Communication
Xiao, Xunzhou
He, Jun
Xu, Xizhen
Chen, Runxiao
Du, Bin
Chen, Yanping
Liu, Shen
Fu, Cailing
Wang, Yiping
High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title_full High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title_fullStr High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title_full_unstemmed High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title_short High-Temperature-Resistant Fiber Laser Vector Accelerometer Based on a Self-Compensated Multicore Fiber Bragg Grating
title_sort high-temperature-resistant fiber laser vector accelerometer based on a self-compensated multicore fiber bragg grating
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9460730/
https://www.ncbi.nlm.nih.gov/pubmed/36080917
http://dx.doi.org/10.3390/s22176459
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