高灵敏度低折射率的双开环通道PCF-SPR传感器设计  

Highly Sensitive Low Refractive Index PCF-SPR Sensor Design Based on Dual Open-ring Channels

作　　者：陈淑婷 张乾坤 杨县超 周哲海[1] CHEN Shuting;ZHANG Qiankun;YANG Xianchao;ZHOU Zhehai(School of Instrument Science and Optoelectronic Engineering,Beijing Information Science and Technology University,Beijing 100192,China;School of Electrical and Information Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192 [2]郑州大学电气与信息工程学院,河南郑州450001

出　　处：《仪表技术与传感器》2023年第11期7-11,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(61875237)。

摘　　要：为了在中红外区域获得高灵敏度的低折射率(RI),在光子晶体光纤(PCF)上设计了一种具有双开环通道的新型结构,并在表面等离子体共振(SPR)效应上建立了传感器。通过COMSOL有限元法(FEM)对所设计PCF-SPR传感器进行仿真分析。结果表明,该传感器对低RI感应具有优异的检测能力,在RI为1.23~1.29的范围内,实现最大波长灵敏度达到10300 nm/RIU,最大理论分辨率为9.71×10^(-6) RIU。To attain highly sensitive low refractive index in the intermediate infrared region,a novel structure with dual open-ring channels was designed on photonic crystal fiber and the sensor was established on surface plasmon resonance effect.The designed PCF-SPR sensor was simulated by COMSOL finite element method.The results demonstrates that the sensor performed a significant detectability for low RI sensing,maximum wavelength sensitivity of the proposed sensor reaches to 10300 nm/RIU in the RI range of 1.23~1.29,and maximum theoretical resolution is 9.71×10^(-6) RIU.

关 键 词：光子晶体光纤 表面等离子体共振 低折射率 微开环分析物通道 

分 类 号：O439[机械工程—光学工程]