Fiber Bragg grating sensor system with interferometric demodulation technique

Youlong Yu, Hwa Yaw Tam, Wenghong Chung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)


Based on the interferometric demodulation technique, a fiber Bragg grating sensor system employing an unbalance wavelength scanning Michelson interferometer to transpose the strain related spectral signal into phase signal is reported. The strain can be recovered by measuring the phase change of the signal with a phase-meter. Experiment demonstrated that the sensing sensitivity of this system with a resolution of 5.5 nε is 1.80° /με. It basically matches the prospected value of 1.80°/με.
Original languageChinese (Simplified)
Pages (from-to)987-989
Number of pages3
JournalGuangxue Xuebao/Acta Optica Sinica
Issue number8
Publication statusPublished - 1 Aug 2001


  • Fiber Bragg grating
  • Interferometric demodulation
  • Sensing resolution
  • Sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • General Physics and Astronomy
  • Atomic and Molecular Physics, and Optics

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