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Interrogation of fiber grating sensor arrays with a wavelength-swept fiber laser

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Abstract

We demonstrate a novel application of a wavelength-swept fiber laser to fiber Bragg grating sensor-array interrogation. The laser provides high signal powers of >3 mW with <0.1-nm spectral resolution over a 28-nm wavelength span. Using time-interval counting, we demonstrate static–dynamic strain measurements with a resolution of 0.47 µ rms at a sampling rate of 250 Hz.

© 1998 Optical Society of America

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