Fiber laser based wavelength division multiplexed fiber bragg grating sensor system

Youlong Yu, Hwa Yaw Tam, Qi Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


A fiber laser-based wavelength division multiplexed sensor system with five fiber bragg grating sensor array as reflector of a ring-cavity fiber laser has been demonstrated experimently. A tunable F-P filter inside the cavity was used to interrogate the sensors and establish the laser formation. Wavelength-shift signal induced by the measured strain was demodulated by an unbalanced Michelson scanning interferometer. The sensitivity of the system was demonstrated to be 1.669°/με which was in agreement with the theoretical value of 1.678°/με well. The system was also designed to track one of the channels automatically with a feedback subsystem.
Original languageChinese (Simplified)
Pages (from-to)592-595
Number of pages4
JournalGuangxue Xuebao/Acta Optica Sinica
Issue number5
Publication statusPublished - 1 May 2002


  • Active sensor
  • F-P filtering
  • Fiber bragg grating
  • Interferometric demodulation
  • Ring-cavity fiber laser
  • Sensing system
  • Wavelength division multiplexing

ASJC Scopus subject areas

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

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