A spot-size converter includes a first part of a waveguiding structure to couple to a first
waveguide to receive light from or transmit light to the first waveguide in a first propagation …

An optical mode converter for coupling between photonic integrated circuit (PIC) and optical
fiber of different mode sizes is illustrated. The optical mode converter includes a waveguide …

Structures for an optical power splitter/combiner and methods of forming a structure for an
optical power splitter/combiner. A first waveguide core is positioned adjacent to a second …

An apparatus includes a cladding layer and a plurality of waveguides. The cladding layer
includes a central axis. The plurality of waveguides are disposed within the cladding layer …

Waveguide structures and methods of fabricating a waveguide structure. The structure
includes a first waveguide core, a second waveguide core, and a third waveguide core …

The invention provides a photonic chip comprising: a silicon substrate, an low refractive
index layer above the silicon substrate, and a tapered waveguide above the low refractive …

Disclosed herein are a photonic integrated circuit (PIC) including an edge coupler (EC) and
method thereof. In some embodiments, the EC is optically coupled to a first wave guide at an …