On-chip VCSEL interconnects enabled by 3-D interposer-based integration and polarization modulation

Optical interconnects are required for a continued scaling of a version of Moore's Law. VCSELs remain the most efficient sources to integrate, and these can be compatibly integrated with emerging 3-D integration technology using active interposers. Polarization-modulation can double the bisection bandwidth available together with coarse WDM and other modulation techniques.