Multiplexing of fiber Bragg grating sensors using an FMCW technique

P. K C Chan, Wei Jin, J. M. Gong, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

54 Citations (Scopus)

Abstract

We report on the use of a frequency-domain reflectometry technique for multiplexing fiber Bragg grating (FBG) sensors. This technique is based on the modulation of light intensity from a broadband source by a swept-frequency RF carrier. Signals from the FBG sensors located at different positions in an array are separated in the frequency-domain and demodulated using a tunable optical filter. A three FBG sensor system is experimentally demonstrated. The potential of the technique for multiplexing a large number of FBG sensors is discussed.
Original languageEnglish
Pages (from-to)1470-1472
Number of pages3
JournalIEEE Photonics Technology Letters
Volume11
Issue number11
DOIs
Publication statusPublished - 1 Nov 1999

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

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