The research field of photonic crystals (PhCs) remains active on a global scale. PhCs, which
are periodic optical nanostructures with the characteristics of excellent light field …

As the most common nonlinear optical process, second harmonic generation (SHG) has
important application value in the field of nanophotonics. With the rapid development of …

dB couplers, which are commonly used in photonic integrated circuits for on-chip information
processing, precision measurement, and quantum computing, face challenges in achieving …

Recently, there has been significant research interest in higher-order topological states
within artificial lattices, primarily due to their potential for manipulating waves. In this study …

The recent realization of all-dielectric valley photonic crystals (VPCs) in nanoscale not only
provides a standard platform to explore many topological phases of light with protected edge …

Conventional polarization beam splitters (PBSs) suffer energy loss and signal distortion due
to backscattering caused by disturbances. Topological photonic crystals provide …

Sharp-bending waveguide is a key element for ultra-compact and densely integrated
photonic devices, which is promising to enlarge the capability of modern information …

Photonic analogs of topological crystalline insulators (PTCIs) that host pseudospin-locked
unidirectional helical interface states have promising applications for develo** novel …

Topological protection in photonics offers new prospects for confining and guiding light
waves. Up to now, most reported works on topological photonics have focused on the …

Chern insulators have been generalized to many classical wave systems and thereby lead
to many potential applications such as robust waveguides, quantum computation and high …