High Transmission in layered composite with graphene and hyperbolic metamaterials

Abstract

The transmission characteristics are presented for the sandwich composite structure containing hyperbolic metamaterials (HMMs) and graphene. The numerical results show that the high transmittance (larger than 0.9) within a ultra wide incident angle range (0 ∼ 68.1°, 0 ∼ 75.7°) can be obtained by optimizing the chemical potential (μc=0.5,0.6eV) for both s-polarized and p-polarized waves under the certain incident frequency (30THz). Meanwhile, to acquire the transmission enhancement in a wide incident angle range, the thickness of HMMs and the number of graphene layers should also be chosen appropriately. Additionally, the broadband and wide-angle of the transmission enhancement for s-polarized and p-polarized waves can be acquired by adjusting the incident angles and frequencies, which has the potential application for bandpass and high-pass filters.