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Plasmonic Waveguide Filters with Nanodisk Resonators

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 FDTD_Nanodisk_Image

Surface plasmon polaritons (SPPs) are waves trapped on the surfaces of metals owing to the interaction between the free electrons in a metal and the electromagnetic field  in a dielectric. This application note demonstrates the concept of multi-channel wavelength filtering using a nanophotonic structure that is based on a metal-insulator-metal (MIM) plasmonic waveguide structure with a nanodisk resonator. The simulation settings for a 2D OptiFDTD simulation are reviewed and the filtering characteristics based on the power spectrum are presented.

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