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Proceedings Paper

Strain sensor based on hollow microsphere Fabry-Perot cavity
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Paper Abstract

Fusion splicing technique was explored for the fabrication of two sensing structures based on hollow microsphere Fabry- Perot cavity. The first sensor proposed was fabricated with a hollow microsphere tip, working as a probe sensor. This structure was studied for lateral load pressure, yielding a 1.56 ± 0.01 nm/N sensitivity. The second sensing structure relied on an in-line hollow microsphere, which allowed the detection of lateral load, with a sensitivity of 2.62 ± 0.02 nm/N. Furthermore, the proposed structure enabled strain sensing, with a sensitivity of 4.66 ± 0.03 pm/με. The two sensing structures were subjected to temperature, presenting low thermal cross-sensitivity.

Paper Details

Date Published: 22 August 2017
PDF: 4 pages
Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 1045326 (22 August 2017); doi: 10.1117/12.2275862
Show Author Affiliations
Catarina S. Monteiro, INESC TEC (Portugal)
Univ. of Porto (Portugal)
Susana O. Silva, INESC TEC (Portugal)
Univ. of Porto (Portugal)
Orlando Frazão, INESC TEC (Portugal)
Univ. of Porto (Portugal)

Published in SPIE Proceedings Vol. 10453:
Third International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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