Quantum dot slab-coupled optical waveguide emitters

A method of fabricating a slab-coupled optical waveguide (SCOW) emitter, the method comprising:

• forming a first cladding layer over a semiconductor substrate comprising silicon;
• forming a first optical waveguide over the first cladding layer, wherein the first optical waveguide is doped with a first conductivity type;
• forming a plurality of quantum dots in an optically active region disposed above the first optical waveguide;
• forming a second optical waveguide over the optically active region, wherein the second optical waveguide is doped with a different, second conductivity type;
• and
• forming a second cladding layer over the second optical waveguide.

An optical system comprising:

• a photonic chip comprising:
• an optical component having a first height relative to a first surface;
• a semiconductor substrate comprising silicon and having a second surface;
• and
• a slab-coupled optical waveguide (SCOW) emitter contacting the second surface, the SCOW emitter comprising an optical waveguide having a second height relative to the second surface, the optical waveguide comprising:
• a first region doped with a first conductivity type;
• a second region doped with a different, second conductivity type;
• and
• an optically active region disposed between the first region and the second region, the optically active region comprising a plurality of quantum dots,
• wherein, when the first surface makes contact with the second surface, the optical waveguide is optically aligned with the optical component in at least one dimension.