Switch Radix Reduction and Support for Concurrent Bidirectional Traffic in RotorNets

Yitzhak Birk, William M. Mellette, Eitan Zahavi

Abstract: Rotor Switches are optical switches that provide cyclic-shift permutations with a fixed round-robin schedule. They have been shown to offer high throughput while significantly reducing control complexity, making them a promising candidate for use in optical data center interconnects. We successfully address two critical challenges impeding the adoption of such circuit switched data center interconnects: 1) switch scalability, and 2) support for simultaneous 2-way connectivity to enable using low-latency protocols.