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Fibers 2018, 6(3), 48;

A Brief Review of New Fiber Microsphere Geometries

Centre for Applied Photonics, Institute for Systems and Computer Engineering, Technology and Science (INESC TEC), 4169-007 Porto, Portugal
Department of Physics and Astronomy, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
Leibniz Institute of Photonic Technology, 07745 Jena, Germany
Author to whom correspondence should be addressed.
Received: 13 June 2018 / Revised: 29 June 2018 / Accepted: 6 July 2018 / Published: 11 July 2018
(This article belongs to the Special Issue Optical Fiber Communications)
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A brief review of new fiber microsphere geometries is presented. Simple microspheres working as Fabry–Perot cavities are interrogated in reflection and in transmission. Two microspheres were also spliced together, and subjected to different physical parameters. These structures are an alternative solution for load measurement and, when read in transmission, it is also possible to apply strain. Moreover, the structure is capable of being used under extreme ambient temperatures up to 900 °C. Random signal in cleaved microspheres was demonstrated with the possibility of using it for random laser or sensing applications. All this work was developed at the Centre for Applied Photonics, INESC TEC. View Full-Text
Keywords: optical fiber sensors; microsphere; Fabry–Perot interferometer; random signal optical fiber sensors; microsphere; Fabry–Perot interferometer; random signal

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Gomes, A.D.; Monteiro, C.S.; Silveira, B.; Frazão, O. A Brief Review of New Fiber Microsphere Geometries. Fibers 2018, 6, 48.

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