中国光学（中英文）2024，Vol.17Issue(3)：528-537,10.DOI:10.37188/CO.2023-0160
基于荧光强度比的毛细管液芯光纤温度传感器
Capillary liquid-core optical fiber temperature sensor based on fluorescence intensity ratio
摘要
Abstract
Aiming to the problem of the complicated preparation of existing optical fiber fluorescence tem-perature sensing probes,we propose a simple,cost-effective,and high-performance optical fiber fluores-cence temperature sensor based on a capillary liquid core.Firstly,a mixed solution consisting of temperature-sensitive rhodamine B and temperature-insensitive rhodamine 123 was used as the temperature-sensitive ma-terial and encapsulated in a stainless-steel capillary to prepare a sensing probe.The ratio of the fluorescence emission peak intensities of the two dyes was utilized for temperature sensing.Subsequently,the sensing probe's mixed solution concentration and capillary structural parameters were optimized.Then,the perform-ance of the sensor was tested.Finally,the sensor was applied to real-life temperature measurements.The ex-perimental results demonstrate that the sensor has a temperature response range of 30-70℃ and that there is a quadratic correlation between the fluorescence intensity ratio and the temperature,with the fitted correla-tion coefficient as high as 0.9984.The sensor exhibits excellent accuracy,repeatability,and stability,with more than three months of service time.Moreover,it can be well-utilized to detect temperature in daily life.The optical fiber fluorescence temperature sensor shows significant potential for real-time monitoring and re-mote detection applications.关键词
光纤/温度传感器/荧光强度比/罗丹明Key words
optical fiber/temperature sensor/fluorescence intensity ratio/rhodamine分类
信息技术与安全科学引用本文复制引用
张烨禹,刘婷,黄建伟,黄学智,陈明杰..基于荧光强度比的毛细管液芯光纤温度传感器[J].中国光学（中英文）,2024,17(3):528-537,10.基金项目
国家自然科学基金(No.62075067,No.61505057) （No.62075067,No.61505057）
华侨大学中青年教师科技创新项目(No.ZQN-PY603)Supported by National Natural Science Foundation of China(No.62075067,No.61505057) （No.ZQN-PY603）
Promotion Pro-gram for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University(No.ZQN-PY603) （No.ZQN-PY603）
