100-km long distance FBG vibration sensor based on matching filter demodulation

Junhao Hu, Zhihao Chen, Ju Teng Teo, Changyuan Yu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


A 100-km long distance fiber Bragg Grating (FBG) vibration sensor system is demonstrated by using a Raman pump laser source at 1395 nm and two segments of erbium doped fiber (EDF). The reflected spectrum of FBG has 30dB signal noise ratio. By using a wavelength matched FBG to achieve wavelength demodulation, vibration frequencies from 1Hz to 1000Hz has been effectively detected in this 100km long distance vibration sensor system.
Original languageEnglish
Title of host publication21st International Conference on Optical Fiber Sensors
Publication statusPublished - 9 Jun 2011
Externally publishedYes
Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
Duration: 15 May 201119 May 2011


Conference21st International Conference on Optical Fiber Sensors
CityOttawa, ON


  • FBG sensor
  • Long distance sensor
  • Matching filter demodulation
  • Raman scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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