title: Fibre tip sensors for localised temperature sensing based on rare earth-doped glass coatings.
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.
authors.affiliation: 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. erik.schartner@adelaide.edu.au.
authors.forename: Erik P
authors.initials: EP
authors.lastname: Schartner
authors.affiliation: 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. tanya.monro@adelaide.edu.au.
authors.forename: Tanya M
authors.initials: TM
authors.lastname: Monro
mesh_terms: D000327:Adsorption; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005898:Glass / Q000737:chemistry*; D008674:Metals, Rare Earth / Q000737:chemistry*; D013696:Temperature; D013817:Thermography / Q000295:instrumentation*; D014159:Transducers
chemical_list: D008674:Metals, Rare Earth