Strain optical fiber sensor with modified sensitivity based on the vernier effect

D. Jauregui-Vazquez; J. P. Korterik; H. L. Offerhaus; R. Rojas-Laguna; J. A. Alvarez-Chavez

doi:10.1080/10739149.2022.2150005

Strain optical fiber sensor with modified sensitivity based on the vernier effect

D. Jauregui-Vazquez, J. P. Korterik, H. L. Offerhaus, R. Rojas-Laguna, J. A. Alvarez-Chavez^*

^*Corresponding author for this work

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

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Abstract

An optical fiber strain sensor with adjustable sensitivity is proposed and demonstrated. The strain sensing setup employs a fiber optic Michelson interferometer (sensing element) and an extrinsic Fabry–Perot interferometer, in which both structures excited the Vernier effect. By adjusting the cavity length of the extrinsic Fabry–Perot interferometer, it is possible to control the M-factor. The set-up offers both sensitivity enhancement and magnification mode, where the maximal sensitivity is 4.38 pm/με (M-factor = 2.3). This design improves the sensor performance and its implementation is not intricate.

Original language	English
Pages (from-to)	421-434
Number of pages	14
Journal	Instrumentation Science and Technology
Volume	51
Issue number	4
Early online date	30 Nov 2022
DOIs	https://doi.org/10.1080/10739149.2022.2150005
Publication status	Published - 4 Jul 2023

Keywords

UT-Hybrid-D
Michelson interferometer
strain fiber optic sensor
Vernier effect
Fabry–Perot interferometer

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10.1080/10739149.2022.2150005Licence: CC BY-NC-ND

Jauregui-vazquez-2022-Strain-optical-fiber-sensor-with-moFinal published version, 3.22 MBLicence: CC BY-NC-ND

Cite this

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title = "Strain optical fiber sensor with modified sensitivity based on the vernier effect",

abstract = "An optical fiber strain sensor with adjustable sensitivity is proposed and demonstrated. The strain sensing setup employs a fiber optic Michelson interferometer (sensing element) and an extrinsic Fabry–Perot interferometer, in which both structures excited the Vernier effect. By adjusting the cavity length of the extrinsic Fabry–Perot interferometer, it is possible to control the M-factor. The set-up offers both sensitivity enhancement and magnification mode, where the maximal sensitivity is 4.38 pm/με (M-factor = 2.3). This design improves the sensor performance and its implementation is not intricate.",

keywords = "UT-Hybrid-D, Michelson interferometer, strain fiber optic sensor, Vernier effect, Fabry–Perot interferometer",

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note = "Funding Information: D. Jauregui-Vazquez appreciates the support of the Optical Sciences group at the University of Twente and DAIP Universidad de Guanajuato. Publisher Copyright: {\textcopyright} 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.",

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AU - Rojas-Laguna, R.

AU - Alvarez-Chavez, J. A.

N1 - Funding Information: D. Jauregui-Vazquez appreciates the support of the Optical Sciences group at the University of Twente and DAIP Universidad de Guanajuato. Publisher Copyright: © 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.

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N2 - An optical fiber strain sensor with adjustable sensitivity is proposed and demonstrated. The strain sensing setup employs a fiber optic Michelson interferometer (sensing element) and an extrinsic Fabry–Perot interferometer, in which both structures excited the Vernier effect. By adjusting the cavity length of the extrinsic Fabry–Perot interferometer, it is possible to control the M-factor. The set-up offers both sensitivity enhancement and magnification mode, where the maximal sensitivity is 4.38 pm/με (M-factor = 2.3). This design improves the sensor performance and its implementation is not intricate.

AB - An optical fiber strain sensor with adjustable sensitivity is proposed and demonstrated. The strain sensing setup employs a fiber optic Michelson interferometer (sensing element) and an extrinsic Fabry–Perot interferometer, in which both structures excited the Vernier effect. By adjusting the cavity length of the extrinsic Fabry–Perot interferometer, it is possible to control the M-factor. The set-up offers both sensitivity enhancement and magnification mode, where the maximal sensitivity is 4.38 pm/με (M-factor = 2.3). This design improves the sensor performance and its implementation is not intricate.

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KW - Michelson interferometer

KW - strain fiber optic sensor

KW - Vernier effect

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Strain optical fiber sensor with modified sensitivity based on the vernier effect

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Keywords

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