Implementation of vectorial bend sensors using long-period gratings UV-inscribed in special shape fibres

Abstract

We report the implementation of vector bending sensors using long-period gratings (LPGs) UV-inscribed in flat-clad, four-core and D-shaped fibres. Our experiments reveal a strong fibre-orientation dependence of the spectral response when such LPGs are subjected to dynamic bending, which provided an opportunity to realize curvature measurement with direction recognition.

Uncontrolled Keywords: bend sensor, long-period grating, special shape fibre
Published Date: 2004-07
Authors: Zhao, Donghui
Zhou, Kaiming
Chen, Xianfeng F.
Zhang, Lin
Bennion, Ian
Flockhart, Gordon M.H.
MacPherson, William N.
Barton, James S.
Jones, Julian D.C.

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