A Novel Fiber Torsion Sensor Using a High-Birefringence Fiber Bragg Grating for Demodulation

Bo Rong Chue; Yu-Lung Lo

A Novel Fiber Torsion Sensor Using a High-Birefringence Fiber Bragg Grating for Demodulation

Bo Rong Chue, Yu-Lung Lo

Department of Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

A novel high-birefringence (Hi-Bi) fiber torsion sensor demodulated by a Hi-Bi fiber Bragg grating (FBG) is proposed in this study. The characteristics of a twisted Hi-Bi fiber sensor are analyzed by using the Jones matrix. As a result, the ratio of intensities from two reflecting Bragg wavelengths is varied with the twist angle in the measured Hi-Bi fiber. The advantages of the novel torsion sensor is concluded as (1) insensitivity to intensity variations from the light source, (2) insensitivity to the torsion gauge length, (3) insensitivity to the thermal variation and external axial strain, (4) absolute measurement in the twist angle, and (5) multiplexing. Therefore, it could be applicable for the smart structure applications, especially in bridges or the other civil structures. However, free from the transverse loading in order to prevent the birefringence change in the twisted Hi-Bi fiber is necessary.

Original language	English
Pages	885-888
Number of pages	4
Publication status	Published - 2002 Dec 1
Event	First IEEE International Conference on Sensors - IEEE Sensors 2002 - Orlando, FL, United States Duration: 2002 Jun 12 → 2002 Jun 14

Other

Other	First IEEE International Conference on Sensors - IEEE Sensors 2002
Country	United States
City	Orlando, FL
Period	02-06-12 → 02-06-14

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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Cite this

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title = "A Novel Fiber Torsion Sensor Using a High-Birefringence Fiber Bragg Grating for Demodulation",

abstract = "A novel high-birefringence (Hi-Bi) fiber torsion sensor demodulated by a Hi-Bi fiber Bragg grating (FBG) is proposed in this study. The characteristics of a twisted Hi-Bi fiber sensor are analyzed by using the Jones matrix. As a result, the ratio of intensities from two reflecting Bragg wavelengths is varied with the twist angle in the measured Hi-Bi fiber. The advantages of the novel torsion sensor is concluded as (1) insensitivity to intensity variations from the light source, (2) insensitivity to the torsion gauge length, (3) insensitivity to the thermal variation and external axial strain, (4) absolute measurement in the twist angle, and (5) multiplexing. Therefore, it could be applicable for the smart structure applications, especially in bridges or the other civil structures. However, free from the transverse loading in order to prevent the birefringence change in the twisted Hi-Bi fiber is necessary.",

author = "Chue, {Bo Rong} and Yu-Lung Lo",

year = "2002",

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language = "English",

pages = "885--888",

note = "First IEEE International Conference on Sensors - IEEE Sensors 2002 ; Conference date: 12-06-2002 Through 14-06-2002",

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T1 - A Novel Fiber Torsion Sensor Using a High-Birefringence Fiber Bragg Grating for Demodulation

AU - Chue, Bo Rong

AU - Lo, Yu-Lung

PY - 2002/12/1

Y1 - 2002/12/1

N2 - A novel high-birefringence (Hi-Bi) fiber torsion sensor demodulated by a Hi-Bi fiber Bragg grating (FBG) is proposed in this study. The characteristics of a twisted Hi-Bi fiber sensor are analyzed by using the Jones matrix. As a result, the ratio of intensities from two reflecting Bragg wavelengths is varied with the twist angle in the measured Hi-Bi fiber. The advantages of the novel torsion sensor is concluded as (1) insensitivity to intensity variations from the light source, (2) insensitivity to the torsion gauge length, (3) insensitivity to the thermal variation and external axial strain, (4) absolute measurement in the twist angle, and (5) multiplexing. Therefore, it could be applicable for the smart structure applications, especially in bridges or the other civil structures. However, free from the transverse loading in order to prevent the birefringence change in the twisted Hi-Bi fiber is necessary.

AB - A novel high-birefringence (Hi-Bi) fiber torsion sensor demodulated by a Hi-Bi fiber Bragg grating (FBG) is proposed in this study. The characteristics of a twisted Hi-Bi fiber sensor are analyzed by using the Jones matrix. As a result, the ratio of intensities from two reflecting Bragg wavelengths is varied with the twist angle in the measured Hi-Bi fiber. The advantages of the novel torsion sensor is concluded as (1) insensitivity to intensity variations from the light source, (2) insensitivity to the torsion gauge length, (3) insensitivity to the thermal variation and external axial strain, (4) absolute measurement in the twist angle, and (5) multiplexing. Therefore, it could be applicable for the smart structure applications, especially in bridges or the other civil structures. However, free from the transverse loading in order to prevent the birefringence change in the twisted Hi-Bi fiber is necessary.

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