A simple fiber bragg grating-based sensor network architecture with self-protecting and monitoring functions

Chien Hung Yeh*, Chi-Wai Chow, Ping Chun Wu, Fan Gang Tseng

*Corresponding author for this work

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

A novel fiber Bragg grating (FBG)-based passive sensor architecture, which can be used to protect the fiber cut and monitor the multiple sensors simultaneously, is proposed and experimentally demonstrated. Here, we employ a wavelength-tunable erbium-doped fiber (EDF) laser scheme with 25 km cavity length acting as the detecting light source in central office (CO). Each FBG sensor, serving as a feedback element, is used in proposed sensor architecture. By tuning the tunable bandpass filter (TBF) placing inside cavity to match the corresponding Bragg wavelength of FBG over the amplification bandwidth, we can retrieve the related wavelength lasing for the FBG sensing and monitoring simultaneously. Moreover, the survivability and capacity of the passive FBG sensor architecture can be also enhanced.

Original languageEnglish
Pages (from-to)1375-1382
Number of pages8
JournalSensors
Volume11
Issue number2
DOIs
StatePublished - 1 Feb 2011

Keywords

  • Fault protection
  • FBG sensor
  • Passive ring architecture

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