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14 October 1987Temperature Sensing By Thermally-Induced Absorption In A Neodymium Doped Optical Fibre
Absorption of 1.06pm radiation in neodymium-doped fibre and subsequent anti-stokes fluorescence is observed in neodymium-doped fibre at elevated temperatures. The increase in absorption is used as the basis for a distributed temperature sensor over the range 20-800°C. The temperature dependence of fluorescence at 940nm is used in an optical fibre point temperature sensor.
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Mark C. Farries, Martin E. Fermann, "Temperature Sensing By Thermally-Induced Absorption In A Neodymium Doped Optical Fibre," Proc. SPIE 0798, Fiber Optic Sensors II, (14 October 1987); https://doi.org/10.1117/12.941094