Abstract
We present and analyze novel vertical rectangular resonator filter based on metal–insulator–metal (MIM) structure. Finite difference time domain (FDTD) method is used in numerical analysis in this paper. Calculations and simulations reveal that the vertical rectangular resonator behaves as plasmonic filter. The free spectral range (FSR) for vertical rectangular resonator is twice as wide as that for transverse rectangular resonator. The aperture-coupled vertical rectangular resonator is also studied in detail. Investigation shows that the transmission curve contains narrow and high peaks, which can be up to 92%.
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