Badamchi Bahareh, Ahmed Simon Al-Amin, Mitkova Maria, Subbaraman Harish
Department of Electrical and Computer Engineering, Boise State University, Boise, ID 83725, USA.
Sensors (Basel). 2021 Feb 25;21(5):1616. doi: 10.3390/s21051616.
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 ∘C and 600 ∘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.
我们展示了一种新型的硫族化物玻璃（ChG）包覆光纤温度传感器，它能够在恶劣环境中运行。该传感器架构利用了硫族化物玻璃的热致相变（非晶态到晶态）特性，这种特性会迅速（80 - 100纳秒）改变材料的光学性质。传感器对光纤尖端硫族化物玻璃帽相变附近温度变化的响应会使反射功率强度发生突变。这个温度指示了传感节点处的温度。我们展示了六种不同成分硫族化物玻璃的传感性能，以及一种使用阵列结构实时解释440℃至600℃之间温度分布的方法。硫族化物玻璃独特的抗辐射特性使这些器件能够与高温和高辐射环境兼容，例如监测轻水反应堆（LWR）或钠冷快堆（SFR）的包层温度。
