Fig. 1
From: Creating topological exceptional point by on-chip all-dielectric metasurface

Schematics of the on-chip all-dielectric metasurface based on topological phase encoding for dual-channel holographic display. The on-chip metasurface is integrated onto the waveguide sitting on a transparent substrate to project LCP/RCP holographic images. The insets illustrate the phase distributions of the extracted LCP component for dielectric (Si) and metal (Al) materials