Electrically-controllable 3D optical waveguide switch with phase change materials
AssigneeHRL Laboratories, LLC
InventorsJeong-Sun Moon, Ryan G. Quarfoth, Kangmu Lee
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Abstract
A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed between the lower and upper waveguides to control a directional of optical coupling between the lower and upper waveguides.
Claims18
An optical coupler or switch structure, comprising two waveguides disposed in different layers of the optical coupler or switch structure and including an optical phase change material disposed between the two waveguides to control an optical coupling between the two waveguides, the optical phase change material disposed in a third waveguide disposed between the first two mentioned waveguides and wherein the first two mentioned two waveguides and said third waveguide are formed of SiN or an alloy of SiN and the optical phase change material is GeSe or a GeSe alloy with an optical bandgap of greater than 1 eV.
A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed within another waveguide comprising mostly SiN or an alloy of SiN, said another waveguide being disposed between the lower and upper waveguides to control an optical coupling between the lower and upper waveguides.
Dependencies are inferred from the claim text.