Patent ID: 9304268
Filing Date: 2016-04-05
CPC Classification: G02B

Claim Text:
1. An optical interposer comprising: a crystalline substrate having a top planar surface and a crystalline plane angle; a plurality of grooves defined in said top planar surface and extending from an edge of said substrate to a terminal end, each of said plurality of grooves having side walls and a first facet at said terminal end perpendicular to said side walls, said first facet having a first angle relative to said top planar surface, said first angle being about said crystalline plane angle, said first facet running across each of said plurality of grooves, said first angle having a delta from a 45° angle, wherein said substrate is silicon and said first angle is 54.7°; a reflective coating on said first facet; an optical conduit having an optical axis and an end face having a second angle with respect to said optical axis, said second angle being non-perpendicular to said optical axis such that the angle of refraction at said end face compensates for said delta such that said end face and said first facet cooperate to bend light about 90°; wherein said end face and said first facet define a space therebetween, wherein said space is an air gap and said second angle is 123.1°.