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Proceedings Paper

Improved Y2O3-ZrO2 waveguide fiber optic sensor for measuring gas-flow temperature above 2000 degrees Celsius
Author(s): Limin Tong; Linhua Ye; Jingyi Lou; Zhongping Shen; Yonghang Shen; Eric Mazur
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Paper Abstract

Although Y2O3-ZrO2 fiber-optic sensor has been developed for contact measurement of temperature higher than 2000 degree(s)C, its performance is not as good as that of sapphire fiber-optic sensor below 1900 degree(s)C due to the large optical loss of the Y2O3-ZrO2 fiber. In order to improve the Y2O3-ZrO2 fiber-optic sensor for ultra-high-temperature applications, in this work, based on a newly developed rectangular Y2O3-ZrO2 single-crystal waveguide with much lower optical loss, an improved Y2O3-ZrO2 waveguide-fiber-optic sensor has been developed. The sensor has been tested up to near 2300 degree(s)C, we estimate that, the improved sensor has similar performance as the sapphire fiber-optic sensor in accuracy and resolution, except the disadvantage of relatively short waveguide. In addition, in this work, instead of the previous volatile and toxic BeO-coated probe, we use a multi-ions-doped sensor head, which is much stable and safe.

Paper Details

Date Published: 14 February 2002
PDF: 8 pages
Proc. SPIE 4578, Fiber Optic Sensor Technology and Applications 2001, (14 February 2002); doi: 10.1117/12.456069
Show Author Affiliations
Limin Tong, Zhejiang Univ. and Harvard Univ. (United States)
Linhua Ye, Zhejiang Univ. (China)
Jingyi Lou, Zhejiang Univ. (China)
Zhongping Shen, Zhejiang Univ. (China)
Yonghang Shen, Zhejiang Univ. (China)
Eric Mazur, Harvard Univ. (United States)

Published in SPIE Proceedings Vol. 4578:
Fiber Optic Sensor Technology and Applications 2001
Michael A. Marcus; Brian Culshaw, Editor(s)

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