Patent ID: 9076902
Filing Date: 2015-07-07
Classification: G02B,H01L

Abstract:
1. An integrated optical receiver system, comprising: a silicon substrate; a mirror structure disposed on the silicon substrate; a silicon waveguide disposed on the silicon substrate and optically coupled to the minor structure, the silicon waveguide having a wide input end that tapers to a narrower end, the input end to receive light from an optical fiber; a grating structure optically coupled to the silicon waveguide and proximate to the minor structure, wherein the grating structure includes an etched grating de-multiplexer formed in the silicon waveguide to facilitate de-multiplexing of single-mode beams and multi-mode beams, wherein the grating structure further includes etched trenches having a buried oxide layer filled with oxide comprising a total internal reflection (TIR) minor of the mirror structure; and a photodetector proximate to a portion of the narrower end of the silicon waveguide wherein light entering the silicon waveguide from the optical fiber is capable of being propagated in a first direction along a length of the silicon waveguide and in a second direction different from the first direction to the photodetector and the change in direction of propagation occurs proximate to the minor structure.