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A portable all-fiber thermometer based on fluorescence intensity ratio (FIR) technique in rare earth doped TeO2-WO3-La2O3-Na2O glass

Abstract

A portable all-fiber thermometer based on FIR technique in Er3+/Yb3+ co-doped TeO2-WO3-La2O3-Na2O (TWLN) glasses was designed and its temperature sensing performance at the temperature range of 293-569 K was determined in details. High glass transition temperature (Tg=439 oC) of TWLN glass is contributable to broaden the range of temperature measurement. The spectroscopic analysis of Eu3+ ions and Judd-Ofelt analysis of Er3+ ions reveal that rare earth ions are situated in a low symmetric environment in TWLN glass, which suggests that a large FIR change and high temperature sensitivity are expected. Intense green upconversion emission in Er3+/Yb3+ co-doped TWLN glass fiber was easily observed under 980nm excitation at a low pumping power (1.4 mW). The maximum temperature sensitivity of the portable all-fiber thermometer reached 86.7×10-4 K–1 at 553K. Experimental results showed that the absolute errors were around ±1 K within the temperature range from 285 to 564 K.

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Publication details

The article was received on 24 Apr 2018, accepted on 10 Jun 2018 and first published on 13 Jun 2018


Article type: Paper
DOI: 10.1039/C8TC01940A
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    A portable all-fiber thermometer based on fluorescence intensity ratio (FIR) technique in rare earth doped TeO2-WO3-La2O3-Na2O glass

    Y. Tu, S. Zhao, D. He, T. Wu, H. Zhang, R. Lei, L. Huang and S. Xu, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC01940A

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