An Optical Fiber Sensor Based on La2O2S: Eu Scintillator for Detecting Ultraviolet Radiation in Real-Time

作者：Yan, Yongji; Zhang, Xu; Li, Haopeng; Ma, Yu; Xie, Tianci; Qin, Zhuang; Liu, Shuangqiang; Sun, Weimin^*; Lewis, Elfed

来源：Sensors (Switzerland), 2018, 18(11): 3754.

DOI：10.3390/s18113754

• ultraviolet optical fiber sensors
• UV sensors
• La2O2S: Eu scintillator
• real-time UV sensors

A novel ultraviolet (UV) optical fiber sensor (UVOFS) based on the scintillating material La2O2S: Eu has been designed, tested, and its performance compared with other scintillating materials and other conventional UV detectors. The UVOFS is based on PMMA (polymethyl methacrylate) optical fiber which includes a scintillating material. Scintillating materials provide a unique opportunity to measure UV light intensity even in the presence of strong electromagnetic interference. Five scintillating materials were compared in order to select the most appropriate one for the UVOFS. The characteristics of the sensor are reported, including a highly linear response to radiation intensity, reproducibility, temperature response, and response time (to pulsed light) based on emission from a UV source (UV fluorescence tube) centered on a wavelength of 308 nm. A direct comparison with the commercially available semiconductor-based UV sensor proves the UVOFS of this investigation shows superior performance in terms of accuracy, long-term reliability, response time and linearity.

• 出版日期2018-11
• 单位哈尔滨工程大学