Grating edge coupler and method of forming same

摘要

An apparatus for optical coupling comprises a substrate, a first waveguide formed on the substrate and includes a grating structure directing light in a first direction, and a second waveguide formed on the first waveguide and including an angled portion directing the light in a second direction different from the first direction.

主权项

1. An apparatus for optical coupling, comprising:
a substrate; a first waveguide formed on the substrate and including a grating structure directing light in a first direction; a second waveguide formed on the first waveguide and including a cutout between an angled surface of the second waveguide directing the light in a second direction different from the first direction and another surface of the second waveguide; and a groove formed in at least the first waveguide and second waveguide for receiving a fiber coupled to the second waveguide; wherein the cutout comprises a vacant area located between a first portion of the second waveguide including the another surface as a side of the first portion, and a second portion of the second waveguide including the angled surface as a side of the second portion.