Waveguide crossings employing tilted MMI structures on silicon wire waveguide are
proposed and demonstrated. Intersecting angle of the two MMI waveguides is optimized for …

A polarization-insensitive waveguide crossing based on multimode interference (MMI)
couplers is proposed and demonstrated on a silicon-on-insulator (SOI) platform. By utilizing …

Multiple optical elements utilize crossing of channel optical waveguides. This paper
introduces efficient silicon wire waveguide crossing by means of vertical coupling of tapered …

In this work, we proposed and experimentally demonstrated a compact and low polarization-
dependent silicon waveguide crossing based on subwavelength grating multimode …

A low loss, small crosstalk offset crossing structure for a Si wire waveguide is proposed. We
analyzed the properties of the structure for both the TE and TM modes by 2-D FDTD (two …

We report multimode-interference (MMI)-based crossings in high-index-contrast silicon wire
waveguides. Our experiments show an MMI crossing of~ 0.4-dB insertion loss, which …

The mode-division-multiplexing (MDM) technology has become an alternative solution to
further increase the link capacity in optical communication systems. Ultralow loss waveguide …

The study of designing a compact transverse electric (TE)/transverse magnetic (TM)
polarization multimode interference (MMI) combiner based on silicon slot-waveguide …

Waveguide crossings are an essential component for constructing complex and functional
on-chip photonic networks. Polarization-insensitive waveguide crossings are desired …

We observe that the cascaded typical Y junctions will introduce unwanted periodic fringes
over the spectrum in practical systems when they link with multimode waveguides. To solve …