An Optical Interconnect Network Design for Dynamically Composable Data Centers

Virtual Data Center (VDC) is becoming the real world tendency of IT model that offers flexible and on-demand service, most of which adopt Software-Defined Networking (SDN) as their network architecture to simplify network management and ensure network isolation. In our paper, by following our Just-in-Time Architecture (JITA) design, we further studied the composable architecture in optical domain. For this architecture to work efficiently, Terabit per second (Tbps) bandwidth and negligible latency (i.e., less than microsecond latency) are needed to support disaggregated infrastructures. Therefore, in this paper, we present an all-optical packets switch solution with proposed SDN controlling scheme. The modeling of the all-optical switch is also proposed, implemented and studied. Based on the modeling of the switch, the output Optical Signal-to-Noise Ratio (OSNR) and latency performance are studied. With the result of the simulation, we find the limits and dominated factors for designing the large scale all-optical switch in the composable data centers. An example of analyzing the maximum throughput and the latency of the all-optical switch is given at the end.