Measuring strain at extreme temperatures with a Fabry-Perot optical fiber sensor

Marta S. Ferreira; Paulo Roriz; Jörg Bierlich; Jens Kobelke; Katrin Wondraczek; Claudia Aichele; Kay Schuster; José L. Santos; Orlando Frazão

doi:10.1117/12.2194513

28 September 2015 Measuring strain at extreme temperatures with a Fabry-Perot optical fiber sensor

Marta S. Ferreira, Paulo Roriz, Jörg Bierlich, Jens Kobelke, Katrin Wondraczek, Claudia Aichele, Kay Schuster, José L. Santos, Orlando Frazão

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96343P (2015) https://doi.org/10.1117/12.2194513
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

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.

Citation Download Citation

Marta S. Ferreira, Paulo Roriz, Jörg Bierlich, Jens Kobelke, Katrin Wondraczek, Claudia Aichele, Kay Schuster, José L. Santos, and Orlando Frazão "Measuring strain at extreme temperatures with a Fabry-Perot optical fiber sensor", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343P (28 September 2015); https://doi.org/10.1117/12.2194513

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