title: Time-and-spatial-multiplexing tree topology for fiber-optic Bragg-grating sensors with interferometric wavelength-shift detection.
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.
authors.forename: A B
authors.initials: AB
authors.lastname: Ribeiro
authors.forename: Y J
authors.initials: YJ
authors.lastname: Rao
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: I
authors.initials: I
authors.lastname: Bennion
authors.forename: D A
authors.initials: DA
authors.lastname: Jackson