Fiber Bragg grating interrogation system with adaptive calibrati

Optics: measuring and testing – By particle light scattering – With photocell detection

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356 355, G01B 902

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active

058185852

ABSTRACT:
A system and method for providing accurate measurements of the reflected wavelengths from multiple strings of fiber Bragg grating (FBG) elements using a single scanning optical filter and an isolated duplicate reference string of FBG elements. A reference string of FBG elements permits precise long-term wavelength determination of sensors by providing real-time adaptive calibration adjustments to correct for any nonlinearities in the response of the single scanning optical filter.

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