In-fibre twist sensor based on a fibre Bragg grating with 81º tilted structure

Abstract

We report a strong polarization dependent coupling behavior of fiber Bragg gratings with excessively tilted structures up to 81 . 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.

Publication DOI: https://doi.org/10.1109/LPT.2006.887371
Uncontrolled Keywords: fiber grating, optical sensor, polarization mode split, twist sensor
Published Date: 2006-12
Authors: Chen, Xianfeng F.
Zhou, Kaiming
Zhang, Lin
Bennion, Ian

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