Information processing technique for time-domain addressing fiber Bragg grating sensor array

You Long Yu, Hwa Yaw Tam, Wen Hong Chung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

An electro-optical modulator was introduced to modulate the continuous light wave into pulses. An unbalance Michelson scanning interferometer was employed to transform the wavelength-shift signal reflected by the Bragg gratings to phase-shift signal. Signal coming from each sensor element was selected by controlling the on-off state of an electrical switch with a programmable delay signal generator and, therefore interrogation for time-domain addressing was achieved. Filtered with a band-pass filter, the measured can be judged by monitoring the phase-shift with a phase meter. Experiment demonstrated that the sensitivity of the 4-element sensor system, which was with a resolution of 6 nε, was 1.63 Deg/με.
Original languageChinese (Simplified)
Pages (from-to)845-848
Number of pages4
JournalZhongguo Jiguang/Chinese Journal of Lasers
Volume28
Issue number9
Publication statusPublished - 1 Sep 2001

Keywords

  • Fiber Bragg grating
  • Information processing
  • Sensor array
  • Time-domain addressing

ASJC Scopus subject areas

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

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