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Sensors 2014, 14(11), 21693-21701; doi:10.3390/s141121693

Fibre Tip Sensors for Localised Temperature Sensing Based on Rare Earth-Doped Glass Coatings

ARC Centre of Excellence for Nanoscale BioPhotonics and Institute for Photonics and Advanced Sensing and School of Chemistry and Physics, The University of Adelaide, Adelaide 5005, Australia
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Received: 4 September 2014 / Revised: 20 October 2014 / Accepted: 11 November 2014 / Published: 17 November 2014
(This article belongs to the Section Physical Sensors)
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Abstract

We report the development of a point temperature sensor, based on monitoring upconversion emission from erbium:ytterbium-doped tellurite coatings on the tips of optical fibres. The dip coating technique allows multiple sensors to be fabricated simultaneously, while confining the temperature-sensitive region to a localised region on the end-face of the fibre. The strong response of the rare earth ions to changing temperature allows a resolution of 0.1–0.3 °C to be recorded over the biologically relevant range of temperatures from 23–39 °C. View Full-Text
Keywords: rare earth; thermometry; point sensing; optical fibres; optical fibre sensing rare earth; thermometry; point sensing; optical fibres; optical fibre sensing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Schartner, E.P.; Monro, T.M. Fibre Tip Sensors for Localised Temperature Sensing Based on Rare Earth-Doped Glass Coatings. Sensors 2014, 14, 21693-21701.

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