We report on the design, simulation and experimental demonstration of a new type of
waveguide crossing based on subwavelength gratings in silicon waveguides. We used 3D …

Single mode silicon-on-insulator rib waveguides offer a weak lateral confinement, which
makes it difficult to design high-performance multimode interference couplers (MMIs) based …

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 …

A compact MMI-based polarization splitter is designed using SOI channel waveguides. Even
though silicon does not have any material birefringence, the slab-like geometry of MMI …

We propose an ultra-small polarization splitter based on a resonant tunneling phenomenon.
This polarization splitter consists of two identical horizontally oblong silicon wire waveguides …

Silicon photonics enabling ultra-small photonic integrated circuits induces a necessity to
develop efficient optical couplers that connect silicon waveguides with optical fibers or …

Two types of 1 * 2 multi-mode interference (MMI) splitters with splitting ratios of 85: 15 and
72: 28 are designed. On the basis of a numerical simulation, an optimal length of the MMI …

We demonstrated a waveguide crossing for submicron silicon waveguides with average
insertion loss of 0.18±0.03 dB and crosstalk of-41±2 dB, uniform across an 8-inch wafer. The …

A high-efficiency and large-alignment-tolerance fiber interface to silicon-on-insulator wire
waveguides is introduced. A spot-size converter is built through a full three-dimensional …

On‐chip multimode transmission has drawn tremendous interest for its ability to expand the
link capacity with a single wavelength carrier. The waveguide crossing is a basic component …