Highly sensitive multicore fiber accelerometer for low frequency vibration sensing

Abstract We report on a compact, highly sensitive all-fiber accelerometer suitable for low frequency and low amplitude vibration sensing. The sensing elements in the device are two short segments of strongly coupled asymmetric multicore fiber (MCF) fusion spliced at 180° with respect to each other....

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Autores principales:	Josu Amorebieta, Angel Ortega-Gomez, Gaizka Durana, Rubén Fernández, Enrique Antonio-Lopez, Axel Schülzgen, Joseba Zubia, Rodrigo Amezcua-Correa, Joel Villatoro
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1303179b789a4abfa038301364ef54bd
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spelling	oai:doaj.org-article:1303179b789a4abfa038301364ef54bd2021-12-02T18:51:06ZHighly sensitive multicore fiber accelerometer for low frequency vibration sensing10.1038/s41598-020-73178-x2045-2322https://doaj.org/article/1303179b789a4abfa038301364ef54bd2020-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-73178-xhttps://doaj.org/toc/2045-2322Abstract We report on a compact, highly sensitive all-fiber accelerometer suitable for low frequency and low amplitude vibration sensing. The sensing elements in the device are two short segments of strongly coupled asymmetric multicore fiber (MCF) fusion spliced at 180° with respect to each other. Such segments of MCF are sandwiched between standard single mode fibers. The reflection spectrum of the device exhibits a narrow spectrum whose height and position in wavelength changes when it is subjected to vibrations. The interrogation of the accelerometer was carried out by a spectrometer and a photodetector to measure simultaneously wavelength shift and light power variations. The device was subjected to a wide range of vibration frequencies, from 1 mHz to 30 Hz, and accelerations from 0.76 mg to 29.64 mg, and performed linearly, with a sensitivity of 2.213 nW/mg. Therefore, we believe the accelerometer reported here may represent an alternative to existing electronic and optical accelerometers, especially for low frequency and amplitude vibrations, thanks to its compactness, simplicity, cost-effectiveness, implementation easiness and high sensitivity.Josu AmorebietaAngel Ortega-GomezGaizka DuranaRubén FernándezEnrique Antonio-LopezAxel SchülzgenJoseba ZubiaRodrigo Amezcua-CorreaJoel VillatoroNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Josu Amorebieta Angel Ortega-Gomez Gaizka Durana Rubén Fernández Enrique Antonio-Lopez Axel Schülzgen Joseba Zubia Rodrigo Amezcua-Correa Joel Villatoro Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
description	Abstract We report on a compact, highly sensitive all-fiber accelerometer suitable for low frequency and low amplitude vibration sensing. The sensing elements in the device are two short segments of strongly coupled asymmetric multicore fiber (MCF) fusion spliced at 180° with respect to each other. Such segments of MCF are sandwiched between standard single mode fibers. The reflection spectrum of the device exhibits a narrow spectrum whose height and position in wavelength changes when it is subjected to vibrations. The interrogation of the accelerometer was carried out by a spectrometer and a photodetector to measure simultaneously wavelength shift and light power variations. The device was subjected to a wide range of vibration frequencies, from 1 mHz to 30 Hz, and accelerations from 0.76 mg to 29.64 mg, and performed linearly, with a sensitivity of 2.213 nW/mg. Therefore, we believe the accelerometer reported here may represent an alternative to existing electronic and optical accelerometers, especially for low frequency and amplitude vibrations, thanks to its compactness, simplicity, cost-effectiveness, implementation easiness and high sensitivity.
format	article
author	Josu Amorebieta Angel Ortega-Gomez Gaizka Durana Rubén Fernández Enrique Antonio-Lopez Axel Schülzgen Joseba Zubia Rodrigo Amezcua-Correa Joel Villatoro
author_facet	Josu Amorebieta Angel Ortega-Gomez Gaizka Durana Rubén Fernández Enrique Antonio-Lopez Axel Schülzgen Joseba Zubia Rodrigo Amezcua-Correa Joel Villatoro
author_sort	Josu Amorebieta
title	Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
title_short	Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
title_full	Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
title_fullStr	Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
title_full_unstemmed	Highly sensitive multicore fiber accelerometer for low frequency vibration sensing
title_sort	highly sensitive multicore fiber accelerometer for low frequency vibration sensing
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/1303179b789a4abfa038301364ef54bd
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Highly sensitive multicore fiber accelerometer for low frequency vibration sensing

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