Patent ID: 11921323
Assignee: CISCO TECHNOLOGY, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device comprising:
a substrate;
first optical waveguides disposed in the substrate on a first layer, the first optical waveguides being substantially mirror images of one another and being arranged as a pair; and
a second optical waveguide disposed in the substrate on a second layer, above the first layer, the second optical waveguide having a substantially rectangular shape with a long axis and a short axis, and being laterally centered over the first optical waveguides and longitudinally arranged between a first end and a second end of the first optical waveguides with the long axis parallel to a line that bisects the first optical waveguides and extends between the first end and the second end of the first optical waveguides, wherein, in cross-section, at least a portion of a longitudinal edge of the second optical waveguide is aligned between longitudinal edges of a given one of the first optical waveguides.