A new FBG based dynamic-strain interrogation system

Jian Fei Song, Li Yang Shao, Aping Zhang, Sai Ling He, Juan Kang, Min Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

A new dynamic-strain interrogation system based on a fiber Bragg grating (FBG) triangular filter is proposed and experimentally demonstrated in this paper. Through a chirp in grating period and an apodization in index modulation, we fabricated a FBG triangular filter, and utilized this filter to demodulate the dynamic-strain signal of another wavelength-matched FBG sensor. By comparing with the results measured by a commercial strain-gauge, this system is proved to have a good performance in the measurement of dynamic strain. Since the system is compact and passive, it is able to be integrated as a portable demodulation module.
Original languageEnglish
Pages (from-to)924-926
Number of pages3
JournalGuangdianzi Jiguang/Journal of Optoelectronics Laser
Volume18
Issue number8
Publication statusPublished - 1 Aug 2007
Externally publishedYes

Keywords

  • Chirped FBG (CFBG)
  • Dynamic strain measurement
  • FBG sensor
  • Fiber Bragg grating (FBG)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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