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High temperature sensing characteristics of erbium-doped fiber using fluorescence intensity ratio technology

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Abstract

The fluorescence intensity ratio (FIR) technique for optical fiber-based temperature sensing is discussed in many previous papers. But in the high temperature sensing the FIR technique has been researched a little. In this paper, the temperature dependence of fluorescence in erbium-doped fiber between ~700 and ~1300°C is discussed and experimentally demonstrated. 1450nm and 1530nm wavelengths are chosen to calculate the FIR, and the temperature coefficient could achieve ~ 0.003dB/°C.

© 2009 OSA, IEEE Photonics Society, SPIE, COS, CIC

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