Patent ID: 11888290
Assignee: CISCO TECHNOLOGY, INC.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 10:
11. A method of fabricating a supermode filtering waveguide (SFW) emitter, the method comprising:
forming a first cladding layer over a semiconductor substrate;
forming a first optical waveguide above the first cladding layer;
forming a spacer layer above the first optical waveguide;
forming a second optical waveguide above the spacer layer by forming a first portion extending from a second portion, wherein the first optical waveguide is disposed in the second portion, wherein the second optical waveguide is disposed in the first portion, and wherein the second optical waveguide is configured, in conjunction with the first optical waveguide, to selectively propagate only a first mode of a plurality of optical modes;
forming an optically active region in one of the first optical waveguide and the second optical waveguide; and
forming a second cladding layer over the second optical waveguide.