基于ZIF-8的双错位光纤二氧化碳传感器  

A double-dislocation optical fiber carbon dioxide sensor based on ZIF-8

作　　者：成立 张莉 沈常宇 CHENG Li;ZHANG Li;SHEN Changyu(College of Sciences,China Jiliang University,Hangzhou 310018,China;College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学理学院,浙江杭州310018 [2]中国计量大学光学与电子科技学院,浙江杭州310018

出　　处：《中国计量大学学报》2023年第3期437-441,共5页Journal of China University of Metrology

摘　　要：目的:提出一种基于ZIF-8的双错位结构光纤二氧化碳体积浓度传感器,通过透射光谱强度的变化分析传感灵敏度。方法:利用3段单模光纤两两错位熔接,使得包层模和纤芯模形成M-Z干涉,并将发生干涉的区域作为传感区域,在其表面涂覆具有吸附气体作用的有机金属框架结构ZIF-8。结果:在二氧化碳体积分数0.03%~1.03%的范围内,该光纤传感器的灵敏度可达8.322 dB/%。结论:这种基于ZIF-8的二氧化碳传感器,具有制作简单、信号解调便捷等优势,对于当前CO 2浓度检测具有重要意义。Aims:This paper aims to propose an optical fiber sensor for carbon dioxide concentration with a double dislocation structure based on ZIF-8 by analyzing the sensing sensitivity through the change of incident light intensity.Methods:Three sections of a single-mode optical fiber were used for two-by-two dislocation fusion so that the cladding mode and the core mode formed the M-Z interference.The area where the interference occurred was used as the sensing area;and the surface was coated with an organic metal frame structure that could absorb gas ZIF-8.Results:In the concentration range of carbon dioxide 0.03%~1.03%,the sensitivity of the optical fiber sensor could reach 8.322 dB/%.Conclusions:This carbon dioxide sensor based on ZIF-8 has the advantages of simple fabrication and convenient signal demodulation,which is of great significance for the current CO 2 concentration detection.

关 键 词：光纤二氧化碳传感器 金属有机框架 ZIF-8 马赫-曾德干涉 

分 类 号：TN253[电子电信—物理电子学]