Micro-displacement or bending measurement using a long-period fibre grating in a self-referenced fibre optic intensity sensor

作者：Baptista JM; Santos SF; Rego G; Frazao O^*; Santos JL

来源：Optics Communications, 2006, 260(1): 8-11.

DOI：10.1016/j.optcom.2005.10.004

• long-period fibre gratings
• optical fibre sensors
• optical fibre intensity sensors

The measurement of micro-displacement or bending using a long-period fibre grating (LPG) in a self-referenced fibre optic intensity sensor is presented. The sensing head is based on a LPG whose attenuation peak changes as a function of its micro-displacement or bending and the fibre optic intensity sensor is referenced in frequency. Two other LPGs were used as rejection filters. located at the output of the optical source to shorten its spectral width. The implemented experimental set-up is described and, the results are presented being considered the measurement range and the intrinsic resolution.

• 出版日期2006-4-1