High-temperature sensor instrumentation with a thin-film-based sapphire fiber

被引：28
作者：
Guo, Yuqing [1 ]
Xia, Wei [1 ]
Hu, Zhangzhong [1 ]
Wang, Ming [1 ]
机构：
[1] Nanjing Normal Univ, Sch Phys & Technol, Jiangsu Key Lab Optoelect Technol, Nanjing 210023, Jiangsu, Peoples R China
来源：
APPLIED OPTICS | 2017年 / 56卷 / 08期
关键词：
INTERFEROMETER; PYROMETRY; TUBES;
D O I：
10.1364/AO.56.002068
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel sapphire fiber-optic high-temperature sensor has been designed and fabricated based on blackbody radiation theory. Metallic molybdenum has been used as the film material to develop the blackbody cavity, owing to its relatively high melting point compared to that of sapphire. More importantly, the fabrication process for the blackbody cavity is simple, efficient, and economical. Thermal radiation emitted from such a blackbody cavity is transmitted via optical fiber to a remote place for detection. The operating principle, the sensor structure, and the fabrication process are described here in detail. The developed high-temperature sensor was calibrated through a calibration blackbody furnace at temperatures from 900 degrees C to 1200 degrees C and tested by a sapphire crystal growth furnace up to 1880 degrees C. The experimental results of our system agree well with those from a commercial Rayteck MR1SCCF infrared pyrometer, and the maximum residual is approximately 5 degrees C, paving the way for high-accuracy temperature measurement especially for extremely harsh environments. (C) 2017 Optical Society of America
引用
收藏
页码：2068 / 2073
页数：6
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