ACTIVE WAVELENGTH DEMODULATION OF BRAGG FIBEROPTIC STRAIN SENSOR USING ACOUSTOOPTIC TUNABLE FILTER

Authors
COROY T ELLERBROCK PJ MEASURES RM BELK JH
Citation
T. Coroy et al., ACTIVE WAVELENGTH DEMODULATION OF BRAGG FIBEROPTIC STRAIN SENSOR USING ACOUSTOOPTIC TUNABLE FILTER, Electronics Letters, 31(18), 1995, pp. 1602-1603
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
31
Issue
18
Year of publication
1995
Pages
1602 - 1603
Database
ISI
SICI code
0013-5194(1995)31:18<1602:AWDOBF>2.0.ZU;2-V
Abstract
An acousto-optic tunable filter based active wavelength demodulation s ystem for intracore Bragg grating fibre-optic sensors has been demonst rated. The system uses an intensity self-referenced edge-locking techn ique to track the reflected signal of the Bragg sensor. A strain resol ution of 2.2 mu epsilon was achieved with a Bragg fibre-optic strain s ensor operating at similar to 1324nm, corresponding to a wavelength re solution of 2.6pm. The potential for high resolution measurements over wide wavelength ranges is particularly attractive for wavelength mult iplexing of Bragg grating sensors.