Structures for an edge coupler and methods of fabricating a structure for an edge coupler. A
waveguide core and a coupler are formed over a layer stack that includes a first dielectric …

The present disclosure relates to semiconductor structures and, more particularly, to rib
waveguide structures and methods of manufacture. The structure includes: a waveguide …

A photonic edge coupler includes a slab waveguide and a ridge waveguide. The ridge
waveguide includes a silicon wire waveguide, which includes a tapered portion. A first end …

An optical waveguide structure may include a dielectric layer having a top surface, an optical
waveguide structure, and an optical coupler embedded within the dielectric layer. The …

Integrated optical structures include a first wafer layer, a first insulator layer directly
connected to the top of the first wafer layer, a second wafer layer directly connected to the …

A grating coupler and a preparation method thereof are provided. The grating coupler
includes a substrate layer, a lower confining layer, a waveguide core layer, and an upper …

A facet optical coupler, and techniques for forming a facet optical coupler, that includes a
waveguide disposed in a trench of a substrate are described. The substrate may be a silicon …

Structures for grating couplers and methods of fabricating a structure including grating
couplers. A first grating coupler includes a first plurality of grating structures. An intercon nect …

Waveguide-to-waveguide couplers, systems that include waveguide-to-waveguide couplers,
and methods of fabricating waveguide-to-waveguide couplers. A first waveguide is coupled …

Techniques for forming a facet optical coupler that includes a waveguide formed over a
trench of a silicon substrate are described. The trench is formed in a silicon substrate and …