DocumentCode :
836885
Title :
In-Fiber Twist Sensor Based on a Fiber Bragg Grating With 81 
Tilted Structure
Author :
Chen, X. ; Zhou, K. ; Zhang, L. ; Bennion, I.
Author_Institution :
Dept. of Electron. Eng., Aston Univ., Birmingham
Volume :
18
Issue :
24
fYear :
2006
Firstpage :
2596
Lastpage :
2598
Abstract :
We report a strong polarization dependent coupling behavior of fiber Bragg gratings with excessively tilted structures up to 81deg. This unique property has been utilized to implement a novel twist sensor, showing high torsion sensitivity. The twist induced light coupling interchange between the two birefringence modes makes it possible to interrogate such a sensor using low-cost intensity demodulation technique
Keywords :
Bragg gratings; birefringence; demodulation; fibre optic sensors; optical fibre polarisation; torsion; birefringence modes; fiber Bragg grating; in-fiber twist sensor; intensity demodulation; polarization dependent coupling; tilted structure; torsion sensitivity; twist induced light coupling interchange; Birefringence; Demodulation; Gas detectors; Gratings; Image sensors; Monitoring; Optical coupling; Optical fiber polarization; Optical fiber sensors; Optical sensors; Fiber grating; optical sensor; polarization mode split; twist sensor;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2006.887371
Filename :
4016116
Link To Document :
