Wavelength-Selective Optical Filters Based on Metal-Patch Cavities With Slot Waveguide Interfaces
We theoretically propose and investigate the resonant wavelength-selective optical filters based on the subwavelength metallo-dielectric nanopatch cavities and the metal slot waveguides.Using the temporal coupled-mode theory and three-dimensional finite-difference time-domain Missouri Star Patterns simulations, we analyze the optical coupling effic