Multiplexing of fiber Bragg grating sensors using subcarrier intensity modulation

Peter K.C. Chan, Wei Jin, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


We report the theory and experimental demonstration of two multiplexing schemes for addressing fiber grating sensor arrays consisting of multiple branches. In the first scheme, light in each branch is intensity modulated at different subcarrier frequencies and signals from different branches are separated in frequency domain by using bandpass filters. In the second scheme, the modulation frequency in each branch can be the same and signal separation is performed in time domain by using an electronic switch after photodetection.
Original languageEnglish
Pages (from-to)345-350
Number of pages6
JournalOptics and Laser Technology
Issue number5
Publication statusPublished - 1 Jan 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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