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Proceedings Paper

Microcavity tip temperature sensor based on post-processing
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Paper Abstract

A Fabry-Pérot microcavity tip temperature sensor based on a special design double-cladding optical fiber is proposed. The produced fiber has pure silica core and outer cladding and a silica ring doped with phosphorous. The whole ring region is removed by chemical etching post-processing. Consequently, light will be guided in the core region. In a first step, the double-cladding optical fiber is spliced to single mode fiber. Afterwards, the tip is etched in a solution of 48% hydrofluoric acid. The inner cladding will be etched faster, and the core becomes suspended and surrounded by air. The Fabry-Pérot microcavity tip sensor is subjected to temperature, and a linear sensitivity of 14.6 pm/°C is obtained.

Paper Details

Date Published: 20 May 2013
PDF: 4 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87942E (20 May 2013); doi: 10.1117/12.2026105
Show Author Affiliations
Marta S. Ferreira, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Jörg Bierlich, Institute of Photonic Technology (Germany)
Kay Schuster, Institute of Photonic Technology (Germany)
José L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Orlando Frazão, INESC Porto (Portugal)


Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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