Design of graphene hybrid plasmonic waveguide device for the generation and conversion of photonic orbital angular momentum
A reconfigurable photonic orbital angular momentum generator and converter based on graphene hybrid plasma waveguide was designed to meet the increasing demand for communication capacity in modern society.The performance of the device was simulated by the time-domain finite-difference method.The simulation results showed that when the Fermi level of graphene was 0 eV,the device realized the photonic orbital angular momentum conversion of topological charge from +1 to-1 or-1 to +1 with a conversion efficiency of up to 93.6%.When the Fermi level of graphene was 0.9 eV,the device could convert the linearly polarized light to vortex light carrying orbital angular momentum.In this case,the device can also be used to identify vortex light with topological charge±1.
photonic orbital angular momentumgraphenehybrid plasmonic waveguidebirefringence effectmode coupling
国家科技期刊平台
NSTL
万方数据
维普
