A new method for interrogation of serial arrays of dynamic FBG strain sensors

Authors
Christmas, SP Jackson, DA
Citation
Sp. Christmas et Da. Jackson, A new method for interrogation of serial arrays of dynamic FBG strain sensors, MEAS SCI T, 12(7), 2001, pp. 897-900
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
MEASUREMENT SCIENCE & TECHNOLOGY
ISSN journal
09570233 → ACNP
Volume
12
Issue
7
Year of publication
2001
Pages
897 - 900
Database
ISI
SICI code
0957-0233(200107)12:7<897:ANMFIO>2.0.ZU;2-F
Abstract
We report a new concept for interrogating and multiplexing large numbers of fibre Bragg grating sensors for dynamic measurands. The series combination of an AOTF and a frequency-modulated MZI forms the basis of a system, whic h allows simultaneous interrogation of eight sensors, and near-simultaneous interrogation of 64. A minimum strain resolution of 2.23 n epsilon Hz(-1/2 ) at a frequency of 10 kHz was achieved.