Journal
SENSORS
Volume 22, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/s22155722
Keywords
high-temperature measurement; fiber-optic sensors; blackbody radiation; fiber Bragg gratings (FBGs); crystal fibers
Funding
- Natural Science Foundation of Shandong Province [ZR2020MF110, ZR2020MF118]
- National Natural Science Foundation of China [62105180]
- Qilu Young Scholar Program of Shandong University
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This paper reviews the importance and advantages of fiber-optic high-temperature sensors in various industries. It also introduces the recent progress in transitioning from glass to crystal fiber sensing solutions and discusses the future prospects and challenges.
High-temperature measurements above 1000 degrees C are critical in harsh environments such as aerospace, metallurgy, fossil fuel, and power production. Fiber-optic high-temperature sensors are gradually replacing traditional electronic sensors due to their small size, resistance to electromagnetic interference, remote detection, multiplexing, and distributed measurement advantages. This paper reviews the sensing principle, structural design, and temperature measurement performance of fiber-optic high-temperature sensors, as well as recent significant progress in the transition of sensing solutions from glass to crystal fiber. Finally, future prospects and challenges in developing fiber-optic high-temperature sensors are also discussed.
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