Fiber thermometer based on the cross detection of the fluorescence decay of Tm:YAG crystal fiber and background radiation

Yonghang Shen; Weizhong Zhao; Jinglei He; Tong Sun; Kenneth T. V. Grattan

doi:10.1117/12.481968

9 September 2002 Fiber thermometer based on the cross detection of the fluorescence decay of Tm:YAG crystal fiber and background radiation

Yonghang Shen, Weizhong Zhao, Jinglei He, Tong Sun, Kenneth T. V. Grattan

Author Affiliations +

Proceedings Volume 4920, Advanced Sensor Systems and Applications; (2002) https://doi.org/10.1117/12.481968
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A fiber thermometer using the cross detection of the fluorescence decay and background radiation was presented to measure the temperature from room temperature to over 1600 °C. A YAG crystal fiber with a Tm doped tip was used as the sensing material. A phase-locked detection scheme was used for the fluorescence detection and background radiation compensation. The compensation current was also used for the background radiation detection. The fluorescence characteristics of the Tm doped YAG crystal fiber was analyzed in a temperature range from room temperature to over 1200 °C. The annealing effect on the probe material under high temperature was also investigated. The preliminary result showed that the system could achieve a resolution much better than 1 °C over the whole temperature range from room temperature to 1400 °C.

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Yonghang Shen, Weizhong Zhao, Jinglei He, Tong Sun, and Kenneth T. V. Grattan "Fiber thermometer based on the cross detection of the fluorescence decay of Tm:YAG crystal fiber and background radiation", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); https://doi.org/10.1117/12.481968

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