Fault Self-Detection Technique in Fiber Bragg Grating-Based Passive Sensor Network

Chien Hung Yeh, Ning Tsai, Yuan Hong Zhuang, Chi-Wai Chow, Wen Feng Liu

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In this paper, we propose and experimentally investigate a fault self-detection technique in fiber Bragg grating (FBG)-based passive sensor network. Here, once a fault occurs on connecting fiber or FBG sensor, it can be detected directly by the proposed sensing network. Moreover, in the proposed FBG sensor system, the multiple wavelength-division-multiplexing FBG sensor numbers can be reduced significantly and also increase the sensing capability for sensing temperature and strain simultaneously. In the measurement, when the temperature variation is from 20 °C to 75 °C, the measured Bragg wavelength shift of tension is nearly 0.74 nm. While the strain shift of 0.3 mm is applied on FBG, the Bragg wavelength shift of nearly 1.88 nm is observed.

Original languageEnglish
Pages (from-to)8070-8074
Number of pages5
JournalIEEE Sensors Journal
Volume16
Issue number22
DOIs
StatePublished - 15 Nov 2016

Keywords

  • Fiber Bragg grating (FBG)
  • fiber fault
  • optical sensor
  • self-detection

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