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Appl Opt. 1997 Nov 1;36(31):8264-9.

Self-referenced point temperature sensor based on a fluorescence intensity ratio in Yb(3+)-doped silica fiber.

Abstract

An optical fiber temperature sensor, based on the fluorescence intensity ratio from the (2)F (5/2)(a) and (2)F(5/2)(b) Stark sublevels in ytterbium-doped silica fiber, has been investigated. Results of a sensor prototype demonstrate an accuracy near 1 degrees C in a 600 degrees C temperature range. Changes in the fluorescence intensity ratio because of variation in pump power, pump wavelength, and induced fiber bending loss are demonstrated to be small, supporting development of a practical sensor based on the technique described.

PMID:
18264366
[PubMed]
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