Demodulation of Multiple Fibre Bragg Grating Sensors using a Ferroelectric Liquid Crystal Tunable Filter

2006 ◽  
Author(s):  
Yuliya Semenova ◽  
Gerald Farrell ◽  
Qian Wang ◽  
Ginu Rajan
Keyword(s):  
Liquid Crystal ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Ferroelectric Liquid Crystal

scholarly journals Novel interrogating system for fibre Bragg grating sensors using an acousto-optic tunable filter

1993 ◽  
Vol 29 (17) ◽  
pp. 1510 ◽  
Author(s):  
M.G. Xu ◽  
H. Geiger ◽  
J.L. Archambault ◽  
L. Reekie ◽  
J.P. Dakin
Keyword(s):  
Tunable Filter ◽  
Bragg Grating ◽  
Fibre Bragg Grating

Ferroelectric liquid-crystal tunable filter

1989 ◽  
Vol 14 (22) ◽  
pp. 1249 ◽  
Author(s):  
H. J. Masterson ◽  
G. D. Sharp ◽  
K. M. Johnson
Keyword(s):  
Liquid Crystal ◽  
Tunable Filter ◽  
Ferroelectric Liquid Crystal

Bragg grating-based fibre optic sensors in structural health monitoring

2006 ◽  
Vol 365 (1851) ◽  
pp. 317-343 ◽  
Author(s):  
Michael D Todd ◽  
Jonathan M Nichols ◽  
Stephen T Trickey ◽  
Mark Seaver ◽  
Christy J Nichols ◽  
...  
Keyword(s):  
Data Analysis ◽  
Health Monitoring ◽  
Composite Beam ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Analysis Technique ◽  
Fabry Perot ◽  
Work First ◽  
Modelling Data

This work first considers a review of the dominant current methods for fibre Bragg grating wavelength interrogation. These methods include WDM interferometry, tunable filter (both Fabry–Perot and acousto-optic) demultiplexing, CCD/prism technique and a newer hybrid method utilizing Fabry–Perot and interferometric techniques. Two applications using these techniques are described: hull loads monitoring on an all-composite fast patrol boat and bolt pre-load loss monitoring in a composite beam in conjunction with a state-space modelling data analysis technique.

Intensity variation effects in fibre Bragg grating sensors scanned by a tunable filter

2000 ◽  
Vol 11 (10) ◽  
pp. 1456-1462 ◽  
Author(s):  
Yu-Lung Lo ◽  
Jen-Fa Huang ◽  
Po-Hsun Sung ◽  
Ming-Dar Yang
Keyword(s):  
Intensity Variation ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Fibre Bragg Grating
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