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

Authors
Boulet, C Webb, DJ Douay, M Niay, P
Citation
C. Boulet et al., Simultaneous interrogation of fiber Bragg grating sensors using an acoustooptic tunable filter, IEEE PHOTON, 13(11), 2001, pp. 1215-1217
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE PHOTONICS TECHNOLOGY LETTERS
ISSN journal
10411135 → ACNP
Volume
13
Issue
11
Year of publication
2001
Pages
1215 - 1217
Database
ISI
SICI code
1041-1135(200111)13:11<1215:SIOFBG>2.0.ZU;2-H
Abstract
In this letter, we describe a novel technique to provide demultimplexing 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 demulti plexing. We demonstrated a noise limited strain resolution of 150 nanostrai n/root Hz and a crosstalk better than -50 dB.