Miniature High Temperature Fiber Bragg Grating Sensor Design Based on U-Shape Lossless Taper for Thermal Mapping Applications
Miniature High Temperature Fiber Bragg Grating Sensor Design Based on U-Shape Lossless Taper for Thermal Mapping Applications
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Date
2010
Authors
Luís Alberto Ferreira
Silvia Abad
José Luís Santos
Francisco Araújo
Diana Viegas
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Abstract
A novel design for a miniature fiber Bragg grating (FBG) based temperature probe is presented. The sensor integrates a u-shape lossless taper thus offering the advantages of a terminal temperature probe free from of strain cross-sensitivity and showing installation flexibility while enabling effective serial multiplexing. The experimental validation of the probe design is reported, being demonstrated lossless operation and effective elimination of strain cross-sensitivity up-to 400 ºC.