Title
Chalcogenide Glass-Capped Fiber-Optic Sensor For Real-Time Temperature Monitoring In Extreme Environments
Abstract
We demonstrate a novel chalcogenide glass (ChG)-capped optical fiber temperature sensor capable of operating within harsh environment. The sensor architecture utilizes the heat-induced phase change (amorphous-to-crystalline) property of ChGs, which rapidly (80-100 ns) changes the optical properties of the material. The sensor response to temperature variation around the phase change of the ChG cap at the tip of the fiber provides abrupt changes in the reflected power intensity. This temperature is indicative of the temperature at the sensing node. We present the sensing performance of six different compositions of ChGs and a method to interpret the temperature profile between 440 degrees C and 600 degrees C in real-time using an array structure. The unique radiation-hardness property of ChGs makes the devices compatible with high-temperature and high-radiation environments, such as monitoring the cladding temperature of Light Water (LWR) or Sodium-cooled Fast (SFR) reactors.
Year
DOI
Venue
2021
10.3390/s21051616
SENSORS
Keywords
DocType
Volume
chalcogenide glass, optical fiber, temperature sensor
Journal
21
Issue
ISSN
Citations 
5
1424-8220
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Bahareh Badamchi100.34
Al-Amin Ahmed Simon200.34
Maria Mitkova300.34
Harish Subbaraman401.35