In-fibre fabry-perot cavity sensor for high temperature applications

Jinesh Mathew; Oliver Schneller; Dimitrios Polyzos; Dirk Havermann; Richard Carter; William Neil MacPherson; Duncan Paul Hand; Robert Raimund Maier

doi:10.1109/JLT.2015.2397936

In-fibre fabry-perot cavity sensor for high temperature applications

Jinesh Mathew, Oliver Schneller, Dimitrios Polyzos, Dirk Havermann, Richard Carter, William Neil MacPherson, Duncan Paul Hand, Robert Raimund Maier

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Abstract

The fabrication, characterization and encapsulation of a fiber optic temperature sensor based upon a micro Fabry–Perot (F-P) cavity is presented. The F-P cavity is formed between a reflective in-fiber metallic splice and the air-fiber boundary at the end of the sensor. A change in temperature modifies the optical cavity length, and this is observed as a change in the reflected interference spectrum. The sensor has been demonstrated for high-temperature measurement up to 1100 °C. The stability of the sensor system is ∼10 °C over a period exceeding 300 h at 1100 °C. Furthermore, a sealed capillary is used as a protective enclosure.

Original language	English
Pages (from-to)	2419-2425
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	33
Issue number	12
Early online date	9 Feb 2015
DOIs	https://doi.org/10.1109/JLT.2015.2397936
Publication status	Published - 2015

Keywords

Fabry–Perot cavity
metal thin-film
optical fiber devices
optical fiber sensors
strain isolation
temperature sensors

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10.1109/JLT.2015.2397936

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title = "In-fibre fabry-perot cavity sensor for high temperature applications",

abstract = "The fabrication, characterization and encapsulation of a fiber optic temperature sensor based upon a micro Fabry–Perot (F-P) cavity is presented. The F-P cavity is formed between a reflective in-fiber metallic splice and the air-fiber boundary at the end of the sensor. A change in temperature modifies the optical cavity length, and this is observed as a change in the reflected interference spectrum. The sensor has been demonstrated for high-temperature measurement up to 1100 °C. The stability of the sensor system is ∼10 °C over a period exceeding 300 h at 1100 °C. Furthermore, a sealed capillary is used as a protective enclosure.",

keywords = "Fabry–Perot cavity, metal thin-film, optical fiber devices, optical fiber sensors, strain isolation, temperature sensors",

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AU - Mathew, Jinesh

AU - Schneller, Oliver

AU - Polyzos, Dimitrios

AU - Havermann, Dirk

AU - Carter, Richard

AU - MacPherson, William Neil

AU - Hand, Duncan Paul

AU - Maier, Robert Raimund

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AB - The fabrication, characterization and encapsulation of a fiber optic temperature sensor based upon a micro Fabry–Perot (F-P) cavity is presented. The F-P cavity is formed between a reflective in-fiber metallic splice and the air-fiber boundary at the end of the sensor. A change in temperature modifies the optical cavity length, and this is observed as a change in the reflected interference spectrum. The sensor has been demonstrated for high-temperature measurement up to 1100 °C. The stability of the sensor system is ∼10 °C over a period exceeding 300 h at 1100 °C. Furthermore, a sealed capillary is used as a protective enclosure.

KW - Fabry–Perot cavity

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KW - optical fiber devices

KW - optical fiber sensors

KW - strain isolation

KW - temperature sensors

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ER -

In-fibre fabry-perot cavity sensor for high temperature applications

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