Figure 3: The transmission and the near-field intensity distributions of different band-stop filters.
From: Tunable Band-Stop Filters for Graphene Plasmons Based on Periodically Modulated Graphene

(a) Transmission spectra of the filters with μc1 equal to 0.4, 0.5 and 0.6 eV, respectively. The solid lines are calculated by EIB-TMM and the dashed lines are simulated by COMSOL. (b) The side views of the near-field intensity distributions for the pass band frequencies and the center frequency of the stop band with μc1 = 0.4 eV. (c) The energy intensity distribution curve for the center frequency of the stop band. Most of the energy is confined in the first four periods.