A Novel Architecture for High Capacity Optical Backplane

The switching capability required by data centers is rapidly developing, however, the technical limitations of the optical devices have created bottlenecks in their performance. Additionally, architectures that support thousands of servers remain to be explored. With a distributed control, we present a high-radix architecture that exploits the space domain and the wavelength domain to provide high throughput, achieving fast configuration and low latency. Considering the network size, we also propose two methods for implementation. We firstly form a strictly non-blocking network under the constraint of one connection per port. To scale up the switch, wavelength division multiplexing (WDM) is utilized to interconnect more servers and achieve higher bandwidth. The simulation results indicate that the proposed architecture can scale over thirty thousand servers with throughput reaching 87% while providing low latency.