期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 15, 期 8, 页码 1647-1650出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/15/8/037
关键词
bend sensor; long-period grating; special shape fibre
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.
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