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

Bo Rong Chue, Yu-Lung Lo

Research output: Contribution to conferencePaperpeer-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 languageEnglish
Pages885-888
Number of pages4
Publication statusPublished - 2002 Dec 1
EventFirst IEEE International Conference on Sensors - IEEE Sensors 2002 - Orlando, FL, United States
Duration: 2002 Jun 122002 Jun 14

Other

OtherFirst IEEE International Conference on Sensors - IEEE Sensors 2002
CountryUnited States
CityOrlando, FL
Period02-06-1202-06-14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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