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


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.

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Divisions: College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies > Electronics & Computer Engineering
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
Publication ISSN: 1941-0174
Last Modified: 23 Oct 2019 10:36
Date Deposited: 24 Nov 2010 12:09
Full Text Link: http://www.scop ... tnerID=8YFLogxK
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Published Date: 2001-11
Authors: Boulet, C.
Webb, David J.
Douay, M.
Niay, P.

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