Patent ID: 11971577
Assignee: NEXUS PHOTONICS LLC
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A device comprising:
first, second and third elements fabricated on a common substrate;
wherein the first element comprises an active waveguide structure supporting a first optical mode, the second element comprises a passive waveguide structure supporting a second optical mode, and the third element, at least partly butt-coupled to the first element, comprises an intermediate waveguide structure supporting intermediate optical modes;
wherein at least part of the second element is non-linear, supporting frequency conversion;
wherein a tapered waveguide structure in at least one of the second and third elements facilitates efficient adiabatic transformation between the second optical mode and one of the intermediate optical modes
wherein no adiabatic transformation occurs between any of the intermediate optical modes and the first optical mode; and
wherein mutual alignments of the first, second and third elements are defined using lithographic alignment marks that facilitate precise alignment between layers formed during processing steps of fabricating the first, second and third elements.