Topologically protected edge states based on valley photonic crystals (VPCs) have been widely studied, from theoretical verification to technical applications. However, research on integrated tuneable ...

A novel topological edge state cavity has been realized to enhance the quality factor and free-spectral range, simultaneously, which opens avenues for developing robust high-performance photonic ...

Active metadevices integrated with semiconductors. (a) Hybrid silicon-metallic resonators for all-optical ultrafast active metamaterials. (b) Broadband metamaterial frequency switch with femtosecond ...