Patent ID: 7352066

Claim:
An optoelectronic system suitable for coupling optical communication means between a first side of a substrate to a second side of a substrate by means of a vertical guide optical via comprising: a substrate wafer having a top surface and a bottom surface, a through vertical cylindrical via extending vertically from said top surface to said bottom surface of said substrate wafer, said through vertical cylindrical via having sidewalls covered with a layer of low refractive index material comprising a cladding layer, said vertical cylindrical via with said low refractive index material comprising said cladding layer on said sidewalls being substantially or fully filled with a high refractive index material to form a core layer; said refractive indices of said materials being either low or high relative to each other, and the difference in refractive indices between said high index of refraction of said core material and said low index of refraction of the cladding layer is between about 0.01 and about 2; light emitting and receiving elements aligned to said vertical guide optical via.