2 June 2014 All-fiber sensor based on a metallic coated hybrid LPG-FBG structure for thermal characterization of materials
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91571R (2014) https://doi.org/10.1117/12.2059655
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
In this paper it is presented an all-fiber implementation of the hot-wire needle probe concept, widely used to measure the thermal properties of materials, particularly the thermal conductivity. It is based on the heating of a metal thin film deposited on the surface of the fiber induced by the coupling of laser light into the cladding via a long period grating, and determination, using a fiber Bragg grating, of the time dependence of the temperature of the surrounding medium at a fixed distance of the fiber. The medium considered in this research was the air and the results obtained indicate the feasibility of this approach and point out future developments.
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G. E. Silva, G. E. Silva, P. Caldas, P. Caldas, J. C. Santos, J. C. Santos, J. L. Santos, J. L. Santos, } "All-fiber sensor based on a metallic coated hybrid LPG-FBG structure for thermal characterization of materials", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571R (2 June 2014); doi: 10.1117/12.2059655; https://doi.org/10.1117/12.2059655
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