Figure 4
Atomically thin optical isolation under the loss condition.
(a) Influence of εd on the forward propagating transmissivity of LCP and RCP waves, where ε1 = ε3 = εd. (b) The isolation performance represented by t+RCP/t+LCP for different εd. (c–f) Ey field distribution of circularly polarized waves propagating in the forward 
and backward 
directions at 0.3 THz. The Parameters are: μc = 0.5 eV, ωc/2π = 0.3 THz, γ = 0.63 THz and εd = 4.8. The black dashed lines denote the location of graphene and the green arrows represent the wave incident direction.
