8 December 2004 Fiber optic high-temperature thermometer using sapphire fiber
Author Affiliations +
Proceedings Volume 5590, Sensors for Harsh Environments; (2004) https://doi.org/10.1117/12.575595
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States
Sapphire (single crystal alumina) has superior optical and mechanical properties. With a very high melting point of about 2050°C, sapphire fiber is an excellent candidate in optical fiber sensing area for high-temperature measurements. This paper presents a new type of sapphire-fiber-based extrinsic Fabry-Perot interferometric (EFPI) temperature sensor. The spectral interference pattern is generated by a sapphire diaphragm placed in front of the sapphire fiber. The sensing element is interrogated by a white-light source. Temperature is demodulated from the spectral change of interference pattern. Prototype sensor is tested at high temperature up to 1545°C. Both theoretical and experimental analysis are presented. Preliminary data shows the sensor is very promising for measuring ultra-high temperature.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yizheng Zhu, Yizheng Zhu, Zhengyu Huang, Zhengyu Huang, Ming Han, Ming Han, Fabin Shen, Fabin Shen, Gary Pickrell, Gary Pickrell, Anbo Wang, Anbo Wang, } "Fiber optic high-temperature thermometer using sapphire fiber", Proc. SPIE 5590, Sensors for Harsh Environments, (8 December 2004); doi: 10.1117/12.575595; https://doi.org/10.1117/12.575595


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