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Proceedings Paper

Measuring strain at extreme temperatures with a Fabry-Perot optical fiber sensor
Author(s): Marta S. Ferreira; Paulo Roriz; Jörg Bierlich; Jens Kobelke; Katrin Wondraczek; Claudia Aichele; Kay Schuster; José L. Santos; Orlando Frazão
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Paper Abstract

In this work, a Fabry-Perot optical fiber sensor for the measurement of strain at extreme temperatures is proposed. The cavity is formed by splicing a short section of a silica tube between two sections of single mode fiber. The tube, with a cladding ~14 μm thick and a hollow core, presents four small rods, of ~20 μm in diameter each, positioned in in diametrically opposite positions. This design ensures higher mechanical stability of the tube. Strain measurements are performed over a wide range of temperatures, until 900 °C. Some of the annealing effects are addressed in this study.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343P (28 September 2015); doi: 10.1117/12.2194513
Show Author Affiliations
Marta S. Ferreira, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Paulo Roriz, INESC Porto (Portugal)
Jörg Bierlich, Leibniz Institute of Photonic Technology (Germany)
Jens Kobelke, Leibniz Institute of Photonic Technology (Germany)
Katrin Wondraczek, Leibniz Institute of Photonic Technology (Germany)
Claudia Aichele, Leibniz Institute of Photonic Technology (Germany)
Kay Schuster, Leibniz Institute of Photonic Technology (Germany)
José L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Orlando Frazão, INESC Porto (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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