Active Multiple Plasmon-Induced Transparency with Graphene Sheets Resonators in Mid-Infrared Frequencies

Figure 4

The graphene system with the right graphene sheet turned off. The transmission spectra correspond to different coupling interval of graphene sheets;  nm, 50 nm, 55 nm, 60 nm, and 65 nm are expressed by blue, pink, green, purple, and red lines, respectively.