A Plasmonic Frequency Splitter for Second and Third Telecommunication Windows

In this paper a frequency splitter for second and third telecommunication windows is designed. For this purpose metal-insulator-metal (MIM) waveguides containing half-ring shaped grooves are used. The presence of a single groove causes transmittance spectra of the waveguide to have maximum and minimum points, however using a few periodic grooves in a MIM waveguide transmits or blocks a band of wavelengths, so acting as a filter. With tuning groove parameters the MIM waveguide containing the grooves can transmit or block a desired wavelength