Simultaneous interrogation of fiber Bragg grating sensors using an acoustooptic tunable filter

Boulet, C.; Webb, David J.; Douay, M. and Niay, P. (2001). Simultaneous interrogation of fiber Bragg grating sensors using an acoustooptic tunable filter. IEEE photonics technology letters, 13 (11), pp. 1215-1217.

Abstract

We describe a novel technique to provide demultiplexing of fiber Bragg grating sensors, interrogated using interferometric wavelength shift detection. Amplitude modulation of multiple radio frequency driving signals allows an acoustooptic tunable filter to provide wavelength demultiplexing. We demonstrated a noise limited strain resolution of 150 nanostrain/v(Hz) and a crosstalk better than -50 dB.

Publication DOI: https://doi.org/10.1109/68.959368
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
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Additional Information: ©2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords: Bragg gratings, acousto-optical filters, demultiplexing, fibre optic sensors, optical crosstalk, optical modulation, optical noise, optical tuning, acoustooptic tunable filter, amplitude modulation, crosstalk, fiber Bragg grating sensors, interferometric wavelength shift detection, multiple radio frequency driving signals, noise limited strain resolution, wavelength demultiplexing
Published Date: 2001-11

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