基于表面等离子体侧耦合谐振腔的可调类EIT温度传感系统  

The Plasmonic Side-Coupled Resonant Cavity Based Tunable EIT-Like Temperature Sensing System

作　　者：骆志刚 邓艳[1,2] Luo Zhigang;Deng Yan(College of Physics and Mechatronic Engineering,Jishou University,Jishou416000,Hunan,China;School of Physics and Chemistry,Hunan First Normal University,Changsha410205,Hunan,China)

机构地区：[1]吉首大学物理与机电工程学院,湖南吉首416000 [2]湖南第一师范学院物理与化学学院,湖南长沙410205

出　　处：《应用激光》2023年第5期77-81,共5页Applied Laser

基　　金：国家自然科学基金项目(61865006);湖南省自然科学基金项目(2019JJ50481);湖南省教育厅优秀青年项目(18B324);吉首大学校级科研项目(Jdy21037)。

摘　　要：提出一种基于表面等离子体侧耦合谐振腔的可调类电磁诱导透明(EIT)温度传感系统。利用时域有限差分法(FDTD),探究腔内液体注入量对透射窗口中心波长的影响。结合表面等离子体(SPPs)对周围环境介电性能的敏感性,对该系统的温度传感性能进行了研究。结果表明,注入氯仿和乙醇的共振波长均与温度变化呈线性关系,并且注入氯仿对温度的灵敏度比乙醇更高,可达到0.425 nm/℃。研究成果将为高集成度光开关、传感以及慢光等器件的研制提供理论指导。In this paper,on the basis of the tunable electromagnetically induced transparent(EIT),a temperature sensing system composed of plasmonic side-coupled resonant cavity is proposed.Utilizing the finite difference Time domain(FDTD)method,we investigated that the central wavelength of the transmission window can be precisely regulated by changing the amount of liquid injected into the cavity.The temperature sensing performance of this system was investigated in conjunction with the sensitivity of surface plasmon polaritons(SPPs)to the dielectric properties of the surrounding environment.It is achieved that the resonance wavelengths for injected chloroform and alcohol are both linear with the change of ambient temperature,and the best temperature sensitivity corresponding to chloroform can reach 0.425nm/℃,which is higher than that of alcohol.The results may provide theoretical guidance for the development of highly integrated optical switching,sensing,and slow light devices.

关 键 词：表面等离子体 谐振腔 时域有限差分法 传感 

分 类 号：TN252[电子电信—物理电子学]