Biomimetic ‘moth-eye’ anti-reflection boundary for graphene plasmons circuits

Abstract

In this paper we propose the biomimetic moth-eye anti-reflection structures on graphene sheet based on transformation optics. The reflections of such structures are investigated by analytical Effective Medium Theory combined with Transfer Matrix Method (EMT/TMM) and numerical Finite Element Method (FEM). Both analytical and numerical methods have shown that the average reflection losses of 1% can be achieved within midinfrared region. Moreover, such performance can be maintained to a very wide incidence angle, achieving less than 1% reflection up to 60° incident angle. The proposed moth-eye anti-reflection structures may provide new visions to achieve biomimetic designs with superior photonic functionalities on graphene-based devices.

Homogeneous Nanostructured VO2@SiO2 as an Anti-Reflecting Layer in the Visible/Near Infrared Wavelength

“…The reflection was reduced to less than 1% in the range of 300-1200 nm, profiting from the combined mechanism of light capture and plasma resonance effect. Ren et al [19] demonstrated that the average reflection loss of 1% in the mid infrared region can be obtained based on the graphene plasma circuit with a biomimetic moth-eye structure.…”