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High dynamic range temperature point sensor using green fluorescence intensity ratio in erbium-doped silica fiber

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4 Author(s)
Maurice, E. ; Lab. de Phys. de la Matiere Condensee, Nice Univ., France ; Monnom, Gerard ; Ostrowsky, D.B. ; Baxter, G.W.

We propose a sensor based on the temperature dependant behavior of the two lines of green emission of the erbium ion. The ratio of the intensities of these two lines presents a very low dependance on pump wavelength and pump power fluctuations. The sensitivity of the ratio is 0.013/°C between room temperature and 600°C. In addition, the measurement is self-calibrated

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Lightwave Technology, Journal of  (Volume:13 ,  Issue: 7 )