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Proceedings Paper

Magnetic field sensing with an in-line Fabry-Perot interferometer based on capillary optical fiber and Terfenol-D
Author(s): Paula M. P. Gouvêa; Greice K. B. Costa; Larissa M. B. Soares; João M. B. Pereira; Fernando C. Fávero; Arthur M. B. Braga; Antonio C. Bruno; Isabel C. S. Carvalho
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Paper Abstract

In this paper we discuss results obtained with an in-line Fabry-Perot interferometer (FPI) built by splicing a small section of capillary fiber between two pieces of standard single mode fiber, resulting in a rectangular air cavity. The FPIs were characterized regarding sensitivity to temperature and longitudinal strain. The FPIs were bonded to pieces of Terfenol-D, a magnetostrictive alloy, to be used as magnetic field sensors. Fiber Bragg Gratings were also bonded to Terfenol-D for comparison. The FPI based on capillary optical fiber and Terfenol-D showed a higher sensitivity to an applied magnetic field when compared to an FBG.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963438 (28 September 2015); doi: 10.1117/12.2194827
Show Author Affiliations
Paula M. P. Gouvêa, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
Greice K. B. Costa, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
Larissa M. B. Soares, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
João M. B. Pereira, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
Fernando C. Fávero, Institute of Photonics and Technology (Germany)
Arthur M. B. Braga, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
Antonio C. Bruno, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)
Isabel C. S. Carvalho, Pontifícia Univ. Católica do Rio de Janeiro (Brazil)


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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