Passive fiber bragg grating sensor system using combined spatial-and time-division multiplexing technique

Youlong Yu, Hwa Yaw Tam, Qi Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Controlled by an 1×3 optical switch, light from a pulsed broadband source was launched into one of 3 independent strings of 5 FBG sensors. By introducing suitable length of fiber as time delay between adjacent two gratings in the same string, the return signals can be selected by a programmable electric switch. Demodulation was achieved by using an unbalance Michelson scanning interferometer. Combined spatial-and time-division multiplexing operation was demonstrated successfully.
Original languageEnglish
Pages (from-to)1313-1315
Number of pages3
JournalGuangxue Xuebao/Acta Optica Sinica
Issue number11
Publication statusPublished - 1 Nov 2001
Externally publishedYes


  • Combined spatial and time-division multiplexing
  • Fiber Bragg grating
  • Interferometric demodulation
  • Sensing network
  • Spatial-division multiplexing
  • Time-division multiplexing

ASJC Scopus subject areas

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

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