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
- Acta Optica Sinica
- Vol. 39, Issue 2, 0212005 (2019)
Fig. 1. Single-baffle MDM waveguide coupled disk cavity cascade structure
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
Fig. 3. Steady electric field distributions under different wavelengths. (a) 740 nm; (b) 755 nm; (c) 1194 nm; (d) 1214 nm
Fig. 4. Effect of radius change on Fano formant and FOM. (a) Fano formant; (b) 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
Fig. 6. Effect of parameter t change on Fano formant and FOM. (a) Fano formant; (b) FOM
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
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Table 1. Measurement and true value of refractive index under single- or multiple-Fano
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