Switched FDM operation of fiber Bragg grating sensors using subcarrier intensity modulation

Peter K. C. Chan; Wei Jin; M. Suleyman Demokan

doi:10.1117/12.316979

21 July 1998 Switched FDM operation of fiber Bragg grating sensors using subcarrier intensity modulation

Peter K. C. Chan, Wei Jin, M. Suleyman Demokan

Proceedings Volume 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials; (1998) https://doi.org/10.1117/12.316979
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

We report on the experimental demonstration of a switched frequency domain technique for multiplexing of fiber Bragg grating sensors using subcarrier intensity modulation. The technique can be used to address fiber Bragg grating sensor arrays consisting of multiple branches and is capable of multiplexing fiber Bragg gratings of either identical or different Bragg wavelengths. The crosstalk between sensors was found to be negligible.

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Peter K. C. Chan, Wei Jin, and M. Suleyman Demokan "Switched FDM operation of fiber Bragg grating sensors using subcarrier intensity modulation", Proc. SPIE 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (21 July 1998); https://doi.org/10.1117/12.316979

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KEYWORDS

Sensors

Fiber Bragg gratings

Modulation

Multiplexing

Modulators

Bandpass filters

Digital filtering

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