Patent ID: 7972879
Filing Date: 2011-07-05
Classification: B82Y,G02B,G02F,H01S

Abstract:
1. A method of fabricating a semiconductor photonic device having mutually perpendicular x, y, and z axes, comprising: providing a substrate having an x-axis and a y-axis defining a plane along a surface of said substrate and a height defining a z-axis of said substrate; depositing a multilayer epitaxial structure on said substrate, said multilayer epitaxial structure containing a first and second waveguide structures for said photonic device, at least one of said first and second waveguide structures having a longitudinal axis parallel to said x-axis of said substrate, and said second waveguide structure being located above said first waveguide structure; and etching at least a first trench downwardly through a to surface of said multilayer epitaxial structure with a component along a z-axis of said substrate, said first trench being etched at non-perpendicular angles to both said x- and y-axes of said substrate and having a side that passes across a first one of said first and second waveguide structures at a non-perpendicular angle to the y axis and thereby forms a reflective facet defining a distal end of said first one of said first and second waveguide structures that reflects light toward a second one of said first and second waveguide structures.