Photorefractive volume holographic demodulation of in-fiber Bragg grating sensors
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1041-1135
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James SW, Dockney ML, Tatam RP. (1996) Photorefractive volume holographic demodulation of in-fiber Bragg grating sensors. IEEE Photonics Technology Letters, Volume 8, Issue 5, May 1996 pp. 664-666
Abstract
A demodulation scheme for an in-fiber Bragg grating sensor using a volume holographic filter formed in photorefractive BaTiO3 is proposed and demonstrated. A strain range of 2500 μstrain, with minimum detectable strain of 4 μstrain/√Hz, is measured. Extension of the technique to allow demodulation of arrays of sensors is discus