Erbium-doped silica fibers for intrinsic fiber-optic temperature sensors

被引:0
作者
Maurice, E. [1 ]
Monnom, G. [1 ]
Dussardier, B. [1 ]
Saïssy, A. [1 ]
Ostrowsky, D.B. [1 ]
Baxter, G.W. [2 ]
机构
[1] Laboratoire de Physique de La Matière Condensée, Centre National de La Recherche Scientifique 190, Université de Nice, Sophia Antipolis, Parc Valrose, Nice Cedex 2,06108, France
[2] Optical Technology Research Laboratory, Victoria University of Technology, P.O. Box 14428, Melbourne,VIC,3000, Australia
关键词
Rare earths - Temperature sensors - Doping (additives) - Fiber optics - Excited states - Ground state - Energy transfer - Optical fibers - Erbium;
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摘要
The variation in the green intensity ratio (2H11/2 and 4S3/2 energy levels to the ground state) of Er ions in silica fibers has been studied as a function of temperature. The different processes that are used to determine the population of these levels are investigated, in particular 800-nm excited-state absorption in Er-doped fibers and 980-nm energy transfer, in Yb-Er-codoped fibers. The invariance of the intensity ratio at a fixed temperature with respect to power, wavelength, and doped fiber length has been investigated and shown to permit the realization of a high-dynamic-range (greater than 600°C), autocalibrated fiber-optic temperature sensor. © 1995 Optical Society of America.
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页码:8019 / 8025
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