中国激光, 2019, 46 (12): 1210001, 网络出版: 2019-12-02
基于飞秒激光微加工的Pt-WO3膜光纤氢气传感器 下载: 1108次
Fiber Hydrogen Sensor Coated with Pt-WO3 Film Based on Femtosecond Laser Micro-processing
传感器 飞秒激光 氢气传感器 Bragg光纤光栅 微结构 sensors femtosecond laser hydrogen sensor fiber Bragg grating microstructure
摘要
制备了交叉螺旋微结构的光纤光栅氢气传感器。利用飞秒激光在布拉格光纤光栅(FBG)包层加工出交叉螺旋微槽,采用水热法制备片状Pt-WO3粉末,在微结构光纤光栅表面镀Pt-WO3膜,对比无微结构探头,螺旋微结构探头增大了传感器灵敏度,微结构探头灵敏度是无微结构探头的1.55倍。通过理论数值计算传感器灵敏度,探讨仿真值与实验结果差异性。制备的传感器具有灵敏度高、响应速度快、重复性好的特点,具有监测氢气泄漏的应用前景。
Abstract
A hydrogen sensor based on a cross spiral-micro-structured fiber Bragg grating (FBG) is developed. We employ a femtosecond laser to fabricate the cross spiral microstructure on the fiber cladding and then coat the surface of the FBG with a Pt-WO3 film prepared by a hydrothermal method. The hydrogen sensitivity of the spiral micro-structured probe is 1.55 times higher than that of a non-micro-structured FBG hydrogen sensor. We determine the sensitivity of the sensor from numerical simulations and discuss the difference between the simulation values and the experimental results. The sensor has the characteristics of high sensitivity, fast response, and good repeatability, and it has significant application prospect for monitoring hydrogen leakage.
周贤, 杨沫, 张文, 周飞, 戴玉堂. 基于飞秒激光微加工的Pt-WO3膜光纤氢气传感器[J]. 中国激光, 2019, 46(12): 1210001. Xian Zhou, Mo Yang, Wen Zhang, Fei Zhou, Yutang Dai. Fiber Hydrogen Sensor Coated with Pt-WO3 Film Based on Femtosecond Laser Micro-processing[J]. Chinese Journal of Lasers, 2019, 46(12): 1210001.