Multifunctional Polarization Modulation Based on All-Dielectric Metamaterial

Abstract

In this work, multifunctional polarization modulation of linearly and circularly polarized light in near-infrared range is achieved based on the all-dielectric metamaterial with bilayer silicon nanorods. In this design, a strong polarization conversion is accompanied by the Fano resonance generated from the coupling effect between the silicon blocks. In addition, the asymmetric transmission and circular dichroism are attained by rotating the silicon bar of the lattice. This work provides a way to realize the multifunctional polarization modulation devices in subwavelength platforms.

Keywords: Metasurfaces, Fano, BIC, Assymetric transmission