A volume holographic spectral filter bank formed in photorefractive BaTiO3 is proposed and demonstrated as a demodulation scheme for in-fiber Bragg grating sensors. A strain range of 2500 microsecond(s) train, with minimum detectable strain of 4 microsecond(s) train/(root)Hz is reported. Extension of the technique to allow intensity referencing and parallel demodulation of an array of sensors is discussed.
Demodulation of in-fiber Bragg grating sensors using volume holograms
Distributed and Multiplexed Fiber Optic Sensors VI ; 1996 ; Denver,CO,United States
Proc. SPIE ; 2838
1996-11-27
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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