Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers

A sensitive temperature sensor was demonstrated using boron-doped polarization-maintaining photonic crystal fiber (PM-PCF) as a Sagnac interferometer (SI). This boron-doped PM-PCF combines both the geometric birefringence introduced by the PCF structure design and the stress birefringence introduced...

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Main Authors: Lan Cheng, Jun Liang, Shiwei Xie, Yilin Tong
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Optics
Subjects:
Online Access:https://www.mdpi.com/2673-3269/3/4/34
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author Lan Cheng
Jun Liang
Shiwei Xie
Yilin Tong
author_facet Lan Cheng
Jun Liang
Shiwei Xie
Yilin Tong
author_sort Lan Cheng
collection DOAJ
description A sensitive temperature sensor was demonstrated using boron-doped polarization-maintaining photonic crystal fiber (PM-PCF) as a Sagnac interferometer (SI). This boron-doped PM-PCF combines both the geometric birefringence introduced by the PCF structure design and the stress birefringence introduced by the boron-doped stress-applying parts. However, we found that the stress birefringence dominates the total birefringence of the sensor by numerical analysis. In the experiments, the fabricated sensor exhibited the highest temperature sensitivity of −1.83 nm/°C within the wide temperature range of 28~76 °C. The temperature sensitivity was mainly derived from the stress birefringence of boron-doped PM-PCF SI. These findings provide some support for the designation of high-precision temperature sensors.
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spelling doaj.art-de1a979518294948bb71d1e5cfcc537b2023-11-24T17:11:04ZengMDPI AGOptics2673-32692022-11-013440040810.3390/opt3040034Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal FibersLan Cheng0Jun Liang1Shiwei Xie2Yilin Tong3Information Science and Technology Department, Wenhua College, Wuhan 430074, ChinaInformation Science and Technology Department, Wenhua College, Wuhan 430074, ChinaSchool of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, ChinaInformation Science and Technology Department, Wenhua College, Wuhan 430074, ChinaA sensitive temperature sensor was demonstrated using boron-doped polarization-maintaining photonic crystal fiber (PM-PCF) as a Sagnac interferometer (SI). This boron-doped PM-PCF combines both the geometric birefringence introduced by the PCF structure design and the stress birefringence introduced by the boron-doped stress-applying parts. However, we found that the stress birefringence dominates the total birefringence of the sensor by numerical analysis. In the experiments, the fabricated sensor exhibited the highest temperature sensitivity of −1.83 nm/°C within the wide temperature range of 28~76 °C. The temperature sensitivity was mainly derived from the stress birefringence of boron-doped PM-PCF SI. These findings provide some support for the designation of high-precision temperature sensors.https://www.mdpi.com/2673-3269/3/4/34polarization maintaining fiberphotonic crystal fibertemperature sensingSagnac interferometer
spellingShingle Lan Cheng
Jun Liang
Shiwei Xie
Yilin Tong
Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
Optics
polarization maintaining fiber
photonic crystal fiber
temperature sensing
Sagnac interferometer
title Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
title_full Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
title_fullStr Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
title_full_unstemmed Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
title_short Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers
title_sort sagnac interferometric temperature sensor based on boron doped polarization maintaining photonic crystal fibers
topic polarization maintaining fiber
photonic crystal fiber
temperature sensing
Sagnac interferometer
url https://www.mdpi.com/2673-3269/3/4/34
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AT shiweixie sagnacinterferometrictemperaturesensorbasedonborondopedpolarizationmaintainingphotoniccrystalfibers
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