Abstract

An absolute displacement-sensing system based on channeled spectrum processing capable of simultaneous interrogation of fiber Bragg gratings and fiber-optic interferometric sensors is presented in which the role of the optical spectrometer is performed by a scanning Fabry–Perot filter. We demonstrate a resolution of ±50 nm with an estimated dynamic range of 1 part in ${10}^5$.

© 2004 Optical Society of America

High-speed, large dynamic range spectral domain interrogation of fiber-optic Fabry–Perot interferometric sensors

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