Patent ID: 9036960
Filing Date: 2015-05-19
Classification: G02B,H01L

Abstract:
1. Photonic passive structure to couple and guide light between photonic active devices, light emitting devices and light-valves, monolithically integrated with CMOS devices, which may be arranged into 2d arrays, and the top of the CMOS metallization layer stack interconnecting said photonic devices and CMOS devices, wherein said photonic passive structure comprises a hole between the near surface of said photonic active devices and the top of said CMOS metallization stack, said hole being filled with a dielectric and having inner surfaces covered with a metal film, in which the dielectric filling the hole has an index of refraction larger than the index of refraction of the inter-metal dielectrics in the metallization stack in which the dielectric filled holes have embedded metal columns, at the center of said holes, in which the cross section area of said columns is smaller than the cross section area of said holes, in which said holes have also embedded metal thin films along the outer perimeter.