金属绝缘体金属
谐振器
同心的
功勋
纳米传感器
慢光
材料科学
半径
折射率
诺共振
光电子学
光学
物理
纳米技术
光子晶体
等离子体子
量子力学
几何学
电容器
数学
电压
计算机安全
计算机科学
作者
Fang Chen,Wen-Xing Yang
出处
期刊:Journal of The Optical Society of America B-optical Physics
[The Optical Society]
日期:2023-03-10
卷期号:40 (4): 736-736
被引量:23
摘要
In this paper, quintuple Fano resonances are produced and numerically analyzed based on a plasmonic resonator system. The system is composed of an optical metal–insulator–metal (MIM) waveguide, a side-coupled disk, and a concentric-ring resonator. Five Fano resonances can be seen, which originate from the interaction of the cavity mode between the disk resonator and the concentric-ring resonator. The transmission spectrum shows that the Fano resonance can be independently tuned by changing different geometrical parameters, such as the outer radius or inner radius of the concentric-ring resonator. The refractive index sensitivity is 1250nm/RIU for FR5, and the figure of merit is 138.9 (RIU is a refractive index unit). It can also serve as a temperature sensor with a maximum sensitivity of about 0.4nm/ ∘ C. Moreover, for slow light, the maximum delay time is about 0.12 ps at FR3. The proposed nano-scale structure has a sharp Fano line shape and effective ways of tuning independently, which may have applications in slow light and nano-biosensing; for example, we show the application of the detection of different human blood types.
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