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27 November 1996 Demodulation of in-fiber Bragg grating sensors using volume holograms
Stephen W. James, Michael L. Dockney, Ralph P. Tatam
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Proceedings Volume 2838, Distributed and Multiplexed Fiber Optic Sensors VI; (1996) https://doi.org/10.1117/12.259815
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States
Abstract
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.
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Stephen W. James, Michael L. Dockney, and Ralph P. Tatam "Demodulation of in-fiber Bragg grating sensors using volume holograms", Proc. SPIE 2838, Distributed and Multiplexed Fiber Optic Sensors VI, (27 November 1996); https://doi.org/10.1117/12.259815
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KEYWORDS
Holograms
Fiber Bragg gratings
Sensors
Volume holography
Optical filters
Demodulation
Holography
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