Active spatial/wavelength-division multiplexed fiber bragg grating sensor system

You Long Yu, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)


A spatial/wavelength-division multiplexed 3×10 fiber Bragg grating sensor array, acted as the reflector of a ring-cavity fiber laser, was interrogated by employing a 1×3 optical switch and a tunable F-P filter. Demodulation was achieved by using an unbalanced Michelson scanning interferometer that transform the wavelength-shift signal induced by the measured strain into phase-shift signal. The sensor sensitivity of the system was demonstrated to be 1.6817 Deg/με, which agrees with the theoretical value of 1.6843 Deg/με well. A feedback subsystem was introduced to make the system track the measuring channel automatically.
Original languageEnglish
Pages (from-to)131-134
Number of pages4
JournalZhongguo Jiguang/Chinese Journal of Lasers
Issue number2
Publication statusPublished - 1 Feb 2002
Externally publishedYes


  • Active sensor
  • F-P filtering
  • Fiber Bragg grating
  • Interferometric demodulation
  • Ring-cavity fiber laser
  • Sensor network
  • Spatial-division multiplexing
  • Wavelength-division multiplexing

ASJC Scopus subject areas

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


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