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

The polarization beam splitter (PBS) is an essential component in the polarization diversity
circuit to overcome the strong polarization dependence of silicon nanophotonic devices …

On‐chip multi‐mode communication has attracted much attention for its potential to greatly
expand the bandwidth of data transmission. However, the application of multi‐mode …

In this paper, theoretical modeling and numerical simulations of a high-performance
polarization beam splitter (PBS) based on hetero-anisotropic metamaterials are proposed …

Polarizers have been widely used in various optical systems to reduce polarization cross
talk. The polarizers based on the silicon nanowire waveguide can provide chip-scale device …

We propose and experimentally demonstrate an ultrabroadband and compact 2× 2 3-dB
coupler based on the trapezoidal subwavelength gratings (SWGs). The adiabatic coupling is …

We propose and demonstrate a 1× 2 power splitter enabling arbitrary power splitting ratios.
The device is based on a directional coupler with subwavelength structure in the coupling …

Asymmetrical directional couplers aided with subwavelength sidewall corrugations are used
to realize ultra-compact silicon mode (de) multiplexers at C-band. Three mode (de) …

We propose an ultra-broadband and ultra-compact polarization rotator (PR) structure on the
silicon-on-insulator platform. The subwavelength gratings (SWGs) are introduced at the …

The multimode power splitter is a basic component in mode-division multiplexing systems. In
this paper, we propose an ultra-broadband silicon multimode power splitter enabling …