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Proceedings Paper

In line Fabry-Perot cavities manufactured by electric arc fusion of NIR-laser micro-drilled optical fiber flat tips
Author(s): Marta Nespereira; João M. P. Coelho; José Rebordão
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Paper Abstract

The manufacturing of inline Fabry-Perot cavities in standard single mode telecommunication optical fiber is presented. The procedure consists in splicing two optical fiber pigtails, one of them with a micro-drilled hole in its tip, creating an air bubble inside the structure. The initial hole is obtained using near infrared radiation from a Q-switch Nd:YAG laser to open 5-10 micrometers deep cavities by laser ablation and plasma formation processes, and a standard splicing machine is used to fuse the two fibers. The length of the obtained cavities lies around 80-110 micrometers. Preliminary tests as a strain sensor are presented.

Paper Details

Date Published: 3 October 2019
PDF: 4 pages
Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112072F (3 October 2019);
Show Author Affiliations
Marta Nespereira, Univ. de Lisboa (Portugal)
João M. P. Coelho, Univ. de Lisboa (Portugal)
José Rebordão, Univ. de Lisboa (Portugal)


Published in SPIE Proceedings Vol. 11207:
Fourth International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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