Scalable AWGR-based All-to-All Optical Interconnects with 2.5D/3D Integrated Optical Interposers

This paper investigates AWGR-based optical interposers for scalable hierarchical all-to-all interconnects. First, we analyzed the crosstalk requirements for single-AWGR-based interposer. Second, we presented a hierarchical all-to-all architecture that can scale beyond 100,000 nodes. Finally, we presented our work-in-progress on 1.6 Tb/s silicon photonic interposer design and fabrication.