Patent ID: 9507111
Filing Date: 2016-11-29
CPC Classification: G02B

Claim Text:
1. An optical interposer comprising: an array of first order diffraction grating couplers arranged to couple light emitted by an array of single mode Vertical-Cavity Surface-Emitting Lasers (VCSELs) into optical waveguides, wherein the light is emitted in a direction substantially perpendicular to the optical waveguides, wherein the array of first order diffraction grating couplers comprises a substrate layer, a reflective element layer, an under cladding layer, a waveguide layer, and an upper cladding layer, wherein the under cladding layer and the upper cladding layer comprise a same material, and wherein the waveguide layer has a refractive index that is greater than refractive indexes of the under cladding layer and the upper cladding layer; a device for refracting the light over an angle of at least four degrees from he substantially perpendicular direction, wherein the light is emitted by the array of single mode VCSELs, wherein the device is positioned between the array of single mode VCSELs and the array of first order diffraction grating couplers; and an array of output ports arranged to optically couple light from the optical waveguides into an array of optical fibers or other optical elements, wherein the optical waveguides couple the array of first order diffraction grating couplers to the array of output ports to route the light from the first order diffraction grating couplers to the output ports, wherein the array of single mode VCSELs comprises multiple columns and rows of single mode VCSELs, wherein the array of output ports comprises a single row of output ports, and wherein each single mode VCSEL in the array of single mode VCSELs is coupled to only one of the output ports such that no of the optical waveguides is shared by more than one of the single mode VCSELs.