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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 24 — Aug. 20, 2006
  • pp: 6071–6076

Surface-mount sapphire interferometric temperature sensor

Yizheng Zhu and Anbo Wang  »View Author Affiliations

Applied Optics, Vol. 45, Issue 24, pp. 6071-6076 (2006)

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A fiber-optic high-temperature sensor is demonstrated by bonding a 45°-polished single-crystal sapphire fiber on the surface of a sapphire wafer, whose optical thickness is temperature dependent and measured by white-light interferometry. A novel adhesive-free coupling between the silica and sapphire fibers is achieved by fusion splicing, and its performance is characterized. The sensor's interference signal is investigated for its dependence on angular alignment between the fiber and the wafer. A prototype sensor is tested to 1170 ° C with a resolution of 0 .4   ° C , demonstrating excellent potential for high-temperature measurement.

© 2006 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.6780) Instrumentation, measurement, and metrology : Temperature

Original Manuscript: November 1, 2005
Revised Manuscript: February 22, 2006
Manuscript Accepted: March 4, 2006

Yizheng Zhu and Anbo Wang, "Surface-mount sapphire interferometric temperature sensor," Appl. Opt. 45, 6071-6076 (2006)

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