Optical fiber sensor for temperature and strain measurement based on multimode interference and square-core fiber

Kun Wang; Xingchen Dong; Patrick Kienle; Maximilian Fink; Wolfgang Kurz; Michael H. Köhler; Martin Jakobi; Alexander W. Koch

doi:10.3390/mi12101239

Optical fiber sensor for temperature and strain measurement based on multimode interference and square-core fiber

Kun Wang, Xingchen Dong, Patrick Kienle, Maximilian Fink, Wolfgang Kurz, Michael H. Köhler, Martin Jakobi, Alexander W. Koch

Chair of Measurement Systems and Sensor Technology

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/^◦C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/^◦C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.

Original language	English
Article number	1239
Journal	Micromachines
Volume	12
Issue number	10
DOIs	https://doi.org/10.3390/mi12101239
State	Published - Oct 2021

Keywords

Multimode interference
Optical fiber sensors
Square-core fiber
Strain measure-ment
Temperature measurement

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10.3390/mi12101239

Cite this

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title = "Optical fiber sensor for temperature and strain measurement based on multimode interference and square-core fiber",

abstract = "A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/◦C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/◦C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.",

keywords = "Multimode interference, Optical fiber sensors, Square-core fiber, Strain measure-ment, Temperature measurement",

author = "Kun Wang and Xingchen Dong and Patrick Kienle and Maximilian Fink and Wolfgang Kurz and K{\"o}hler, {Michael H.} and Martin Jakobi and Koch, {Alexander W.}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = oct,

doi = "10.3390/mi12101239",

language = "English",

volume = "12",

journal = "Micromachines",

issn = "2072-666X",

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TY - JOUR

T1 - Optical fiber sensor for temperature and strain measurement based on multimode interference and square-core fiber

AU - Wang, Kun

AU - Dong, Xingchen

AU - Kienle, Patrick

AU - Fink, Maximilian

AU - Kurz, Wolfgang

AU - Köhler, Michael H.

AU - Jakobi, Martin

AU - Koch, Alexander W.

PY - 2021/10

Y1 - 2021/10

N2 - A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/◦C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/◦C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.

AB - A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/◦C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/◦C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.

KW - Multimode interference

KW - Optical fiber sensors

KW - Square-core fiber

KW - Strain measure-ment

KW - Temperature measurement

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U2 - 10.3390/mi12101239

DO - 10.3390/mi12101239

M3 - Article

AN - SCOPUS:85117706069

SN - 2072-666X

VL - 12

JO - Micromachines

JF - Micromachines

IS - 10

M1 - 1239

ER -

Optical fiber sensor for temperature and strain measurement based on multimode interference and square-core fiber

Abstract

Keywords

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