All-fiber sensor based on a metallic coated hybrid LPG-FBG structure for thermal characterization of materials

• Type: Article in International Conference Proceedings Book
• Date: 2014

Authors

Silva, GE (Author) Other; Caldas, P (Author) Other; Santos, JC (Author) Other; Santos, JL (Author) FCUP

Conference proceedings International

Title: 23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS

23rd International Conference on Optical Fibre Sensors

Santander, SPAIN, JUN 02-06, 2014

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Scopus - 1 Citation

Other information

Authenticus ID: P-009-M9E

DOI: 10.1117/12.2059655

Abstract (EN): 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. © 2014 SPIE.

Language: English

Type (Professor's evaluation): Scientific