一种高灵敏折射率传感器的制作与性能测试  

Fabrication and Performance Test of a High Sensitive Refractive Index Sensor

作　　者：陈慧丽[1] 李杰[1] CHEN Huili;LI Jie(College of Electronic and Electrical Engineering,Zhengzhou University of Science and Technology,Zhengzhou 450064,China)

机构地区：[1]郑州科技学院电子与电气工程学院,郑州450064

出　　处：《实验室研究与探索》2022年第6期26-29,91,共5页Research and Exploration In Laboratory

基　　金：2018年度河南省科技厅产学研课题(182107000061)。

摘　　要：通过自主搭建的轮式光纤侧面抛磨系统得到表面较为粗糙的D型光纤,将光纤的一端镀一层Ag膜作为反射镜面,由此得到D型光纤探针。检测探针的传感特性时发现,被测溶液折射率的变化会引起不同能量的吸收,由此使得光功率计接收的功率发生明显的改变。通过实验可得,制备的D型光纤传感器不仅具有非常强的稳定性,而且线性度也非常好。尤其是抛磨损耗为18 dB传感器的灵敏度和线性相关系数分别高达66.02 dB/RIU和99.58%。通过对折射率的精度进行测量和计算可得其精度高达0.00004。The D-type optical fiber with rough surface is prepared by the independently built wheel optical fiber side polishing system,and then one end of the optical fiber is coated with a layer of Ag film,which can be used as a mirror,so as to obtain the D-type optical fiber probe.Finally,when detecting the sensing characteristics of the probe,it is found that the change of the refractive index of the measured solution can cause the absorption of different energy,which significantly changes the optical power received by the optical power meter.Through a series of experiments,it can be concluded that the prepared D-type optical fiber sensor not only has very strong stability,but also has very good linearity.In particular,the sensitivity and linear correlation coefficient of the sensor with polishing loss of 18 dB are as high as 66.02 dB/RIU and 99.58%,respectively.By measuring and calculating the accuracy of refractive index,the accuracy can be as high as 0.00004.

关 键 词：高灵敏度 抛磨粗糙度 线性度 D型光纤传感器 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]