Fig. 1. (a) Schematic of the SRR plasmonic structure. (b) A close-up picture of the patterned graphene metamaterial.

Fig. 2. (a) Transmission spectra of different Fermi levels and (b) surface current distribution of F1 (7.6 THz) on the graphene metamaterial.

Fig. 3. (a) Transmission spectra of different line-widths at 0.5 eV and (b) modulation depth (1−T/T0) spectra.

Fig. 4. (a) Transmission spectra of different layers at 0.5 eV and (b) modulation depth spectra.

Fig. 5. (a) and (b) THz wave transmission and modulation depth spectra as a function of frequency of different incidence angles. (c), (d), and (e) Surface current distributions of the three resonant modes.