光学学报, 2019, 39 (2): 0212005, 网络出版: 2019-05-10
单挡板金属-电介质-金属波导耦合圆盘腔级联多Fano共振差动传感 
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Multi-Fano Resonance Differential Sensing by Single-Baffle Metal-Dielectric-Metal Waveguide Coupled Disk Cavity Cascade
图 & 表
图 1. 单挡板MDM波导耦合圆盘级联结构
Fig. 1. Single-baffle MDM waveguide coupled disk cavity cascade structure
图 2. Fano共振形成过程。(a)只有挡板时和只有圆盘级联时的透射谱;(b)单挡板MDM波导耦合圆盘级联结构形成的Fano共振谱
Fig. 2. Fano resonance formation process. (a) Transmission spectrum with only baffle or only cascaded disk cavity; (b) Fano resonance spectrum formed by single-baffle MDM waveguide coupled disk cavity cascade structure
图 3. 不同波长下的稳态电场分布。(a) 740 nm; (b) 755 nm; (c) 1194 nm; (d) 1214 nm
Fig. 3. Steady electric field distributions under different wavelengths. (a) 740 nm; (b) 755 nm; (c) 1194 nm; (d) 1214 nm
图 4. 半径变化对Fano共振峰和FOM的影响。(a) Fano共振峰;(b) FOM
Fig. 4. Effect of radius change on Fano formant and FOM. (a) Fano formant; (b) FOM
图 5. 金属档板厚度对Fano共振峰和FOM的影响。(a) Fano共振峰;(b)模式一的FOM;(c)模式二的FOM
Fig. 5. Effect of metal-baffle thickness on Fano formant and FOM. (a) Fano formant; (b) FOM of mode 1; (c) FOM of mode 2
图 6. 参数t变化对共振峰和FOM值的影响。(a) Fano共振峰;(b) FOM
Fig. 6. Effect of parameter t change on Fano formant and FOM. (a) Fano formant; (b) FOM
图 7. 共振波长与环境折射率n的关系。(a)不同环境折射率n下的透射谱;(b) 共振波长与环境折射率n的线性关系
Fig. 7. Relationship between resonant wavelength and environmental refractive index n. (a) Transmission spectra under different environment refractive index n; (b) linear relationship between resonant wavelength and environmental refractive index n
表 1单Fano、多Fano的折射率测量值与真实值
Table1. Measurement and true value of refractive index under single- or multiple-Fano
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韩帅涛, 陈颖, 许扬眉, 曹景刚, 高新贝, 谢进朝, 朱奇光. 单挡板金属-电介质-金属波导耦合圆盘腔级联多Fano共振差动传感[J]. 光学学报, 2019, 39(2): 0212005. Shuaitao Han, Ying Chen, Yangmei Xu, Jinggang Cao, Xinbei Gao, Jinchao Xie, Qiguang Zhu. Multi-Fano Resonance Differential Sensing by Single-Baffle Metal-Dielectric-Metal Waveguide Coupled Disk Cavity Cascade[J]. Acta Optica Sinica, 2019, 39(2): 0212005.
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