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Proceedings Paper

Optical properties of sapphire fiber under high temperature
Author(s): Linhua Ye; Zhongping Shen; Limin Tong; Yonghang Shen
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Paper Abstract

With a high melting point (over 2000°C), high transmission from ultraviolet to infrared wavelength approaching 4 μm, favorable mechanical strength and chemically inertness, the sapphire fiber is suitable for high temperature optical fiber sensor and near-infrared energy delivery. In this paper, the self-radiation and performance stability of sapphire fiber under high temperature was studied. Experiment results have shown that the self-radiation of sapphire fiber would influence the temperature measurement accuracy. The optical transmission loss increased with the time when the sapphire fiber was exposed to the high temperature environments. The most important factor that resulted in the performance deterioration was the direct contacting of the sapphire fiber with the protective tube and the dirtying of the evaporating substance. A suitable protective tube was applied to assure the performance stability. For further improvement of the optical properties of sapphire fiber, an alumina cladding is being developed to protect the sapphire fiber surface.

Paper Details

Date Published: 20 September 2002
PDF: 6 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.470963
Show Author Affiliations
Linhua Ye, Zhejiang Univ. (China)
Zhongping Shen, Zhejiang Univ. (China)
Limin Tong, Zhejiang Univ. (United States)
Yonghang Shen, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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