Transmissible topological edge states based on Su-Schrieffer-Heeger photonic crystals with defect cavities.

ABSTRACT: Topological photonic crystals have great potential in the application of on-chip integrated optical communication devices. Here, we successfully construct the on-chip transmissible topological edge states using one-dimensional Su-Schrieffer-Heeger (SSH) photonic crystals with defect cavities on silicon-on-insulator slab. Different coupling strengths between the lateral modes and diagonal modes in photonic crystal defect cavities are used to construct the SSH model. Furthermore, two photonic SSH-cavity configurations, called α and β configurations, are designed to demonstrate the topological edge states. Leveraging the capabilities of photonic crystal transverse electric modes with on-chip transmission, we introduced a waveguide to excite a boundary defect cavity and found that the transmis

SUBMITTER: Yan Q 

PROVIDER: S-EPMC11636502 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature