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Proceedings Paper

Reflection-mode fiber-optic temperature sensing probe based on quantum dots filled micro-cavity
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Paper Abstract

We report a prototype reflection-mode fiber optic probe based on quantum dots filled micro-cavity. The probe was fabricated by sealing quantum dots liquid or coating inside a glass capillary pigtailed with a multimode optical fiber. And the probe was tested for in situ measurement of temperature change. By analyzing the back-reflected fluorescence signals generated from the quantum dots, the localized temperature of the microcavity structure could be correlated. The sensitivities based on fluorescence peak wavelength and full-width at half-maximum (FWHM) were calculated for both sensors in the biologically meaningful temperature range of 33.0-42.0C. This proposed reflection-mode trumpet-shape micro-cavity probe is attractive for chemical and biological sensing because it is cost-effective, simple to fabricate, mechanically robust and miniaturized in size.

Paper Details

Date Published: 20 February 2020
PDF: 5 pages
Proc. SPIE 11233, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX, 112331F (20 February 2020); doi: 10.1117/12.2545291
Show Author Affiliations
Qi Zhang, Clemson Univ. (United States)
Jincheng Lei, Clemson Univ. (United States)
Liwei Hua, Clemson Univ. (United States)
Yongji Wu, Clemson Univ. (United States)
Xuran Zhu, Clemson Univ. (United States)
Hai Xiao, Clemson Univ. (United States)

Published in SPIE Proceedings Vol. 11233:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX
Israel Gannot, Editor(s)

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