Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating

A reflection fiber inclinometer is proposed and experimentally demonstrated based on two linearly polarized (LP) modes coupling. The configuration consists of a section of polarization-maintaining fiber (PMF) containing a fiber Bragg grating (FBG) splicing with single mode fiber (SMF). Bending the P...

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Main Authors: Dan Su, Xueguang Qiao, Hangzhou Yang, Qiangzhou Rong, Zhengyuan Bai, Yupeng Wang, Zhongyao Feng
Format: Article
Language:English
Published: MDPI AG 2014-11-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/14/11/20930
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author Dan Su
Xueguang Qiao
Hangzhou Yang
Qiangzhou Rong
Zhengyuan Bai
Yupeng Wang
Zhongyao Feng
author_facet Dan Su
Xueguang Qiao
Hangzhou Yang
Qiangzhou Rong
Zhengyuan Bai
Yupeng Wang
Zhongyao Feng
author_sort Dan Su
collection DOAJ
description A reflection fiber inclinometer is proposed and experimentally demonstrated based on two linearly polarized (LP) modes coupling. The configuration consists of a section of polarization-maintaining fiber (PMF) containing a fiber Bragg grating (FBG) splicing with single mode fiber (SMF). Bending the PMF in the upstream of FBG can induce an additional birefringence of PMF, which results in the intensity changes of two LP modes owing to orthogonal polarization coupling. The experimental results represent that the device shows different bending responses at the angle range from 0° to 40°and from 64° to 88°, respectively. Moreover, the temperature change just shifts the wavelengths of LP modes reflected and does not influence their intensities, which effectively avoid the temperature cross-sensitivity and make it a good candidate for measuring inclinometer and temperature simultaneously.
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spelling doaj.art-8d229d93369645e79afb00a9ed36149d2022-12-22T04:00:49ZengMDPI AGSensors1424-82202014-11-011411209302093910.3390/s141120930s141120930Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg GratingDan Su0Xueguang Qiao1Hangzhou Yang2Qiangzhou Rong3Zhengyuan Bai4Yupeng Wang5Zhongyao Feng6School of Physics, Northwest University, Xi'an 710069, ChinaSchool of Physics, Northwest University, Xi'an 710069, ChinaSchool of Physics, Northwest University, Xi'an 710069, ChinaSchool of Physics, Northwest University, Xi'an 710069, ChinaKey Laboratory of Material for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaSchool of Physics, Northwest University, Xi'an 710069, ChinaSchool of Physics, Northwest University, Xi'an 710069, ChinaA reflection fiber inclinometer is proposed and experimentally demonstrated based on two linearly polarized (LP) modes coupling. The configuration consists of a section of polarization-maintaining fiber (PMF) containing a fiber Bragg grating (FBG) splicing with single mode fiber (SMF). Bending the PMF in the upstream of FBG can induce an additional birefringence of PMF, which results in the intensity changes of two LP modes owing to orthogonal polarization coupling. The experimental results represent that the device shows different bending responses at the angle range from 0° to 40°and from 64° to 88°, respectively. Moreover, the temperature change just shifts the wavelengths of LP modes reflected and does not influence their intensities, which effectively avoid the temperature cross-sensitivity and make it a good candidate for measuring inclinometer and temperature simultaneously.http://www.mdpi.com/1424-8220/14/11/20930fiber optics sensorpolarization-maintaining fiber bragg gratingbending
spellingShingle Dan Su
Xueguang Qiao
Hangzhou Yang
Qiangzhou Rong
Zhengyuan Bai
Yupeng Wang
Zhongyao Feng
Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
Sensors
fiber optics sensor
polarization-maintaining fiber bragg grating
bending
title Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
title_full Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
title_fullStr Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
title_full_unstemmed Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
title_short Temperature-Independent Fiber Inclinometer Based on Orthogonally Polarized Modes Coupling Using a Polarization-Maintaining Fiber Bragg Grating
title_sort temperature independent fiber inclinometer based on orthogonally polarized modes coupling using a polarization maintaining fiber bragg grating
topic fiber optics sensor
polarization-maintaining fiber bragg grating
bending
url http://www.mdpi.com/1424-8220/14/11/20930
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