Figure 6
From: Design and analysis of 2D one-way splitter waveguide based on topological photonics
(a) By introducing an aluminum defect, the electric field propagates from the left to the right, around the defect through the edge states, confirming topological protection. Blue arrows represent Poynting vectors, (b) and (c) illustrate the energy propagation at the top, and the bottom of the defect, respectively.
