bend sensor;
long-period grating;
special shape fibre;
D O I:
10.1088/0957-0233/15/8/037
中图分类号:
T [工业技术];
学科分类号:
08 [工学];
摘要:
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.