Mode-division multiplexing (MDM) technology has drawn tremendous attention for its ability
to expand the link capacity within a single-wavelength carrier, paving the way for large-scale …

With high integration density and excellent optical properties, silicon photonics is becoming
a promising platform for complete integration and large-scale optical quantum information …

A Luneburg lens with a gradient index distribution is an aberration-free and coma-free
spherical lens. It has wide applications ranging from invisibility cloaks, illusion optics, and …

Dynamically encircling exceptional points (EPs) can lead to chiral mode switching as the
system parameters are varied along a path that encircles EP. However, conventional …

Photonic signal processing is essential in the optical communication and optical computing.
Numerous photonic signal processors have been proposed, but most of them exhibit limited …

Exceptional points (EPs) are branch point singularities of self-intersecting Riemann sheets,
and they can be observed in a non-Hermitian system with complex eigenvalues. It has been …

Multimode waveguide crossings (MWCs) are becoming more and more important as one of
the key elements for on‐chip optical routing and cross‐connection. However, it is still very …

In the past few decades, silicon photonics has witnessed a ramp-up of investment in both
research and industry. As a basic building block, silicon waveguide crossing is inevitable for …

Subwavelength structures such as subwavelength gratings (SWGs) and subwavelength
metamaterials are capable of tailoring the optical properties of materials and controlling the …

Polarization and mode division multiplexing are powerful tools for large-capacity parallel
optical communications. Dual-polarization and mode-division multiplexed silicon photonic …