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Sensors 2018, 18(11), 4071; https://doi.org/10.3390/s18114071

Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation

1,2,†
,
2,†,* , 2
,
1,2
,
2
,
3
and
2
1
Collaborative Innovation Center of High-End Manufacturing Equipment, Xi’an Jiaotong University, Xi’an 710054, China
2
State Key Laboratory of Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 20 September 2018 / Revised: 19 November 2018 / Accepted: 19 November 2018 / Published: 21 November 2018
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [2365 KB, uploaded 21 November 2018]   |  

Abstract

An ordinary optical fiber ultra-high temperature sensor based on infrared radiation with the advantages of simple structure and compact is presented. The sensing system consists of a detection fiber and a common transmission fiber. The detector fiber is formed by annealing a piece of ordinary fiber at high temperature twice, which changes the properties of the fiber and breaks the temperature limit of ordinary fiber. The transmission fiber is a bending insensitive optical fiber. A static calibration system was set up to determine the performance of the sensor and three heating experiments were carried out. The temperature response sensitivities were 0.010 dBm/K, 0.009 dBm/K and 0.010 dBm/K, respectively, which indicate that the sensor has good repeatability. The sensor can withstand a high temperature of 1823 K for 58 h with an error of less than 1%. The main reason why the developed ordinary optical fiber sensor can work steadily for a long time at high temperature is the formation of β-cristobalite, which is stable at high-temperature. View Full-Text
Keywords: high temperature sensing; optical fiber sensor; infrared radiation high temperature sensing; optical fiber sensor; infrared radiation
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Lin, Q.; Zhao, N.; Yao, K.; Jiang, Z.; Tian, B.; Shi, P.; Chen, F. Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation. Sensors 2018, 18, 4071.

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