Time-and-spatial-multiplexing tree topology for fiber-optic Bragg-grating sensors with interferometric wavelength-shift detection

A.B. Lobo Libeiro, Y.J. Rao, L. Zhang, I. Bennion, D.A. Jackson

Research output: Contribution to journalArticlepeer-review

Abstract

A combined time-and-spatial-division-multiplexed tree topology with eight fiber-optic Bragg-grating sensors operating at the 830-nm wavelength was constructed and tested for both quasistatic and periodic strain and temperature measurements. The system uses a interferometric wavelength- shift discriminator and incorporates a reference channel for thermal drift compensation in the output. Dynamic sensor sensitivity, as determined by primary noise sources, is evaluated, and numerical results are presented and compared with experimental results. Key words: Fiber-sensor multiplexing, fiber Bragg gratings, strain sensors.
Original languageEnglish
Pages (from-to)2267-2273
Number of pages7
JournalApplied Optics
Volume35
Issue number13
DOIs
Publication statusPublished - 1 May 1996

Keywords

  • fiber-sensor multiplexing
  • fiber Bragg gratings
  • strain sensors

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