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Temperature and strain insensitive bending measurements with D-type fibre Bragg gratings

2001; IOP Publishing; Volume: 12; Issue: 7 Linguagem: Inglês

10.1088/0957-0233/12/7/314

1361-6501

F. M. Araújo, Luís Ferreira, J. L. Santos, Faramarz Farahi,

Advanced MEMS and NEMS Technologies

We present a new sensor configuration based on the intrinsic bend sensitivity of Bragg gratings written in D-type fibres. This sensor can be embedded in any layer of a composite material to evaluate curvature in a way independent of axial strain and temperature. It can also be used to measure other parameters such as acceleration, angle and acoustic pressure.