DocumentCode
1543771
Title
Simultaneous interrogation of fiber Bragg grating sensors using an acoustooptic tunable filter
Author
Boulet, C. ; Webb, D.J. ; Douay, M. ; Niay, P.
Author_Institution
Sch. of Phys. Sci., Kent Univ., Canterbury, UK
Volume
13
Issue
11
fYear
2001
Firstpage
1215
Lastpage
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//spl radic/(Hz) and a crosstalk better than -50 dB.
Keywords
Bragg gratings; acousto-optical filters; demultiplexing; fibre optic sensors; optical crosstalk; optical modulation; optical noise; optical tuning; acoustooptic tunable filter; amplitude modulation; crosstalk; demultiplexing; fiber Bragg grating sensors; interferometric wavelength shift detection; multiple radio frequency driving signals; noise limited strain resolution; wavelength demultiplexing; Acoustic signal detection; Amplitude modulation; Capacitive sensors; Crosstalk; Demultiplexing; Filters; RF signals; Radio frequency; Radio interferometry; Sensor phenomena and characterization;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.959368
Filename
959368
Link To Document