Patent ID: 9671563
Date: 2017-06-06
CPC Classifications: G02B,H01L

Claim:
1. An optoelectronic integrated circuit for coupling light to an external optical fiber or waveguide, comprising: a semiconductor body including first and second opposite and parallel external surfaces, and further including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between said first and second surfaces, with the optical device layer between the semiconductor substrate and the first surface of the semiconductor body; at least one optical waveguide formed in the optical device layer for guiding light in a defined plane in the optical device layer; and a grating patterned into the optical device layer and comprising alternating silicon and dielectric facets to couple light from the waveguide, through the buried oxide layer and through the substrate, to the second external surface of the semiconductor body, opposite the first external surface thereof, at a near-normal angle to said defined plane to couple the light from the waveguide to an external optical fiber or waveguide.