Fig. 1. Structural diagram of graphene-based plasmonic XNOR/XOR logic gate

Fig. 2. Add-drop-channel micro-ring resonator of graphene-based plasmonic waveguide. (a) Three dimensional view; (b) top view

Fig. 3. (a) Output response of add-drop-channel micro-ring resonators versus chemical potential of graphene when coupling gap is 2-6 nm and frequency is 30 THz. (a) Through-port; (b) drop-port

Fig. 4. Transmission of add-drop-channel micro-ring resonators versus frequency when coupling gap is 2 nm. (a) Through-port; (b) drop-port

Fig. 5. Magnetic field intensity distributions of add-drop-channel micro-ring resonators at frequency of 30 THz under different chemical potentials of graphene. (a) 0.677 eV; (b) 0.95 eV

Fig. 6. Field intensity distributions of graphene-based plasmonic waveguide at frequency of 30 THz when chemical potential of graphene is 0.677 eV and 0.95 eV, respectively. (a) (c) Electric field; (b) (d) magnetic field

Fig. 7. Magnetic field intensity distributions of XNOR/XOR logic gates of graphene-based plasmonic waveguide at frequency of 30 THz under different input logic states of MRR 1 and MRR 2. (a) 00; (b) 01; (c) 10; (d) 11

Fig. 8. Transmission spectra of XNOR/XOR logic gates of graphene-based plasmonic waveguide under different input logic states of MRR 1 and MRR 2. (a) 00; (b) 01; (c) 10; (d) 11