A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip

A linearized wavelength-swept thermo-optic laser chip was applied to demonstrate a fiber Bragg grating (FBG) sensor interrogation system. A broad tuning range of 11.8 nm was periodically obtained from the laser chip for a sweep rate of 16 Hz. To measure the linear time response of the reflection sig...

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Autores principales: Lee, Hyung-Seok, Lee, Hwi Don, Kim, Hyo Jin, Cho, Jae Du, Jeong, Myung Yung, Kim, Chang-Seok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208164/
https://www.ncbi.nlm.nih.gov/pubmed/25177803
http://dx.doi.org/10.3390/s140916109
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author Lee, Hyung-Seok
Lee, Hwi Don
Kim, Hyo Jin
Cho, Jae Du
Jeong, Myung Yung
Kim, Chang-Seok
author_facet Lee, Hyung-Seok
Lee, Hwi Don
Kim, Hyo Jin
Cho, Jae Du
Jeong, Myung Yung
Kim, Chang-Seok
author_sort Lee, Hyung-Seok
collection PubMed
description A linearized wavelength-swept thermo-optic laser chip was applied to demonstrate a fiber Bragg grating (FBG) sensor interrogation system. A broad tuning range of 11.8 nm was periodically obtained from the laser chip for a sweep rate of 16 Hz. To measure the linear time response of the reflection signal from the FBG sensor, a programmed driving signal was directly applied to the wavelength-swept laser chip. The linear wavelength response of the applied strain was clearly extracted with an R-squared value of 0.99994. To test the feasibility of the system for dynamic measurements, the dynamic strain was successfully interrogated with a repetition rate of 0.2 Hz by using this FBG sensor interrogation system.
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spelling pubmed-42081642014-10-24 A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip Lee, Hyung-Seok Lee, Hwi Don Kim, Hyo Jin Cho, Jae Du Jeong, Myung Yung Kim, Chang-Seok Sensors (Basel) Article A linearized wavelength-swept thermo-optic laser chip was applied to demonstrate a fiber Bragg grating (FBG) sensor interrogation system. A broad tuning range of 11.8 nm was periodically obtained from the laser chip for a sweep rate of 16 Hz. To measure the linear time response of the reflection signal from the FBG sensor, a programmed driving signal was directly applied to the wavelength-swept laser chip. The linear wavelength response of the applied strain was clearly extracted with an R-squared value of 0.99994. To test the feasibility of the system for dynamic measurements, the dynamic strain was successfully interrogated with a repetition rate of 0.2 Hz by using this FBG sensor interrogation system. MDPI 2014-08-29 /pmc/articles/PMC4208164/ /pubmed/25177803 http://dx.doi.org/10.3390/s140916109 Text en © 2014 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 license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Lee, Hyung-Seok
Lee, Hwi Don
Kim, Hyo Jin
Cho, Jae Du
Jeong, Myung Yung
Kim, Chang-Seok
A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title_full A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title_fullStr A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title_full_unstemmed A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title_short A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip
title_sort fiber bragg grating sensor interrogation system based on a linearly wavelength-swept thermo-optic laser chip
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208164/
https://www.ncbi.nlm.nih.gov/pubmed/25177803
http://dx.doi.org/10.3390/s140916109
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