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Proceedings Paper

Investigation and development of a fibre optic temperature sensor for monitoring liquid temperature in a high-power microwave environment
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Paper Abstract

An extrinsic optical fiber temperature sensor has been investigated and results are presented. A coating consists of a combination of two inorganic phosphors. Thermal quenching dominates the luminescent characteristics of one phosphor at temperatures in the range of interest while the other more stable phosphor is used as a reference. Ratios of their peak emission intensities are calculated and analyzed. The phosphor mixture is coated onto a Pyrex beaker. Boiling water is poured into beaker and the ratio is calculated as the temperature of the water descreases from 80°C to 30°C. Results show an increasing ratio for decreasing temperature. This paper describes the testing of the coating and its application, as part of a temperature sensor, for monitoring surface temperatures in electromagnetically harsh industrial environments.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566595
Show Author Affiliations
Mary McSherry, Univ. of Limerick (Ireland)
Colin Fitzpatrick, Univ. of Limerick (Ireland)
Elfed Lewis, Univ. of Limerick (Ireland)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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