Fig. 7
(a) Plasmon wavelengths of the cases with only the GNRs and only dielectric grating-loaded graphene sheet for different ribbon and grating width. The inserts show the field distribution of the modes. (b) Absorption spectra for different polarization angles of GNR and dielectric grating-loaded graphene-coupled system with their width of 54 nm. (c–f) Resonant positions of the two PIT peaks at different polarization angles for different systems. The inserts show the corresponding structures