Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer

A compact temperature sensor with highly germania-doped fiber (Ge-fiber)-based Michelson interferometer (MI) is proposed and experimentally demonstrated. It is constructed by splicing a 1-mm-long, 75 mol.% GeO2-doped fiber to a single-mode fiber and fabricating a taper at the splicing point. The fib...

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Main Authors: Bao, Lifeng, Dong, Xinyong, Shum, Perry Ping, Shen, Changyu
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/140636
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1406362020-06-01T03:02:55Z Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer Bao, Lifeng Dong, Xinyong Shum, Perry Ping Shen, Changyu School of Electrical and Electronic Engineering CNRS International NTU THALES Research Alliance Engineering::Electrical and electronic engineering Temperature Sensors Highly Germania-doped Fibers A compact temperature sensor with highly germania-doped fiber (Ge-fiber)-based Michelson interferometer (MI) is proposed and experimentally demonstrated. It is constructed by splicing a 1-mm-long, 75 mol.% GeO2-doped fiber to a single-mode fiber and fabricating a taper at the splicing point. The fiber taper improves mode conversion efficiency and thus increases the extinction ratio of the interference fringe. The free spectral range is only 18.9 nm owing to the much larger differential refractive index of the Ge-fiber than normal fibers. By monitoring wavelength shift of the reflection spectrum, temperature measurement within a wide range of 30°C-400°C is successfully achieved with sensitivity up to 100 pm/°C, which is much higher than normal fiber-based MI sensors owing to the higher thermo-optic coefficient of the Ge-fiber. The compact size and high sensitivity make the proposed sensor a highly potential candidate in point measurement of temperature. 2020-06-01T03:02:55Z 2020-06-01T03:02:55Z 2018 Journal Article Bao, L., Dong, X., Shum, P. P., & Shen, C. (2018). Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer. IEEE Sensors Journal, 18(19), 8017-8021. doi:10.1109/jsen.2018.2864799 1530-437X https://hdl.handle.net/10356/140636 10.1109/JSEN.2018.2864799 2-s2.0-85052589748 19 18 8017 8021 en IEEE Sensors Journal © 2018 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Temperature Sensors
Highly Germania-doped Fibers
spellingShingle Engineering::Electrical and electronic engineering
Temperature Sensors
Highly Germania-doped Fibers
Bao, Lifeng
Dong, Xinyong
Shum, Perry Ping
Shen, Changyu
Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
description A compact temperature sensor with highly germania-doped fiber (Ge-fiber)-based Michelson interferometer (MI) is proposed and experimentally demonstrated. It is constructed by splicing a 1-mm-long, 75 mol.% GeO2-doped fiber to a single-mode fiber and fabricating a taper at the splicing point. The fiber taper improves mode conversion efficiency and thus increases the extinction ratio of the interference fringe. The free spectral range is only 18.9 nm owing to the much larger differential refractive index of the Ge-fiber than normal fibers. By monitoring wavelength shift of the reflection spectrum, temperature measurement within a wide range of 30°C-400°C is successfully achieved with sensitivity up to 100 pm/°C, which is much higher than normal fiber-based MI sensors owing to the higher thermo-optic coefficient of the Ge-fiber. The compact size and high sensitivity make the proposed sensor a highly potential candidate in point measurement of temperature.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Bao, Lifeng
Dong, Xinyong
Shum, Perry Ping
Shen, Changyu
format Article
author Bao, Lifeng
Dong, Xinyong
Shum, Perry Ping
Shen, Changyu
author_sort Bao, Lifeng
title Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
title_short Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
title_full Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
title_fullStr Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
title_full_unstemmed Compact temperature sensor with highly germania-doped fiber-based Michelson interferometer
title_sort compact temperature sensor with highly germania-doped fiber-based michelson interferometer
publishDate 2020
url https://hdl.handle.net/10356/140636
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