强激光与粒子束, 2019, 31 (9): 091005, 网络出版: 2019-10-12   

基于单端探测温度和折射率的MZI光纤传感器

MZI fiber optic sensor based on single-ended temperature and refractive index detection
作者单位
1 四川大学 电子信息学院, 成都 610065
2 华北光电技术研究所, 北京 100015
摘要
提出并演示了一种基于单端探测的光纤传感器,可同时测量温度和折射率。微结构光纤探头由两个玻璃光纤微球拼接在一起,并在该探头的末端利用真空电子束蒸镀一层铝膜以增加反射,从而形成微球结构的马赫-曾德尔型光纤传感头。实验结果表明,该器件的温度灵敏度和折射率可分别达到50.77 pm/℃和-21.94 nm/RIU。这项工作提出了一种低成本、高分辨率的基于光纤方法实现的多功能传感应用。单端探测的马赫曾德尔型光纤传感器小尺寸的优势可应用到小体积气体的测量,而它的全二氧化硅设计提供了高温或化学严酷环境的兼容性。
Abstract
We present and demonstrate a fiber-optic sensor based on single-ended detection that measures both temperature and refractive index. The cladding of the two microsphere-structured fibers is spliced together, and the end of the fiber is coated with an aluminum film to increase reflection, thereby forming a microsphere structure sensing head. The experimental results show that the temperature sensitivity and refractive index of the device can reach 50.77 pm/°C and -21.94 nm/RIU, respectively. This work presents a low-cost, high-resolution and simple fiber-based approach to versatile sensing applications.
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余俊良, 冯国英, 周寿桓. 基于单端探测温度和折射率的MZI光纤传感器[J]. 强激光与粒子束, 2019, 31(9): 091005. Yu Junliang, Feng Guoying, Zhou Shouhuan. MZI fiber optic sensor based on single-ended temperature and refractive index detection[J]. High Power Laser and Particle Beams, 2019, 31(9): 091005.

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