Tunable Optical Bistability in One-Dimensional Photonic Crystal with a Nonlinear Defect Coupled by Graphene Sheets

Figure 1

(a) The schematic diagram of a 1DPC with a nonlinear defect and graphene layers. m represents the number of periods. (b) Complex effective refractive index of graphene as function of . The solid line and dashed line represent real and imaginary components respectively.

(a)

(b)