Control of Nonlinear Optical Absorption in One-Dimensional Photonic Crystal with Graphene Defect

Today, graphene nanostructures have made potential application in nonlinear optoelectronic devices, e.g. in narrowband filters. In this paper, the nonlinear absorption of one-dimensional defective photonic crystal made of Ta2O5 and SiO2 periodic layers and graphene layer as a structural defect showing non-linear optical properties are investigated in the visible wavelength region using the transfer matrix method (TMM). Due to the high third-order nonlinear susceptibility of the graphene layer, the optical Kerr effect is found to be a dominant effect in the studied structure. Results indicate that the absorption response of the structure is tuneable through the changes in periodicity, polarization and angle and amplitude of incident. Calculation results show that it is possible to achieve two absorption values of 0.99 with an incident amplitude of less than  and zero with incident amplitude higher than , an incident wavelength of 818 nm.