CPC G02B 6/26 (2013.01) | 20 Claims |
1. An optical coupler structure comprising:
a waveguide in a first insulator and comprising waveguide metamaterial segments separated from one another and aligned along a first line;
a second insulator on the first insulator and the waveguide; and
a coupler structure in the second insulator aligned along a second line,
wherein the first line and the second line are parallel and within a plane,
wherein a portion of the waveguide overlaps a portion of the coupler structure,
wherein the waveguide metamaterial segments intersect the plane and have first widths in a direction perpendicular to the plane, and the first widths have a first taper along the first line,
wherein the coupler structure has a second taper along the second line, and
wherein the first taper is different from the second taper where the waveguide overlaps the coupler structure.
|