DOS: a scalable optical switch for datacenters

This paper discusses the architecture and performance studies of Datacenter Optical Switch (DOS) designed for scalable and highthroughput interconnections within a data center. DOS exploits wavelength routing characteristics of a switch fabric based on an Arrayed Waveguide Grating Router (AWGR) that allows contention resolution in the wavelength domain. Simulation results indicate that DOS exhibits lower latency and higher throughput even at high input loads compared with electronic switches or previously proposed optical switch architectures such as OSMOSIS [4, 5] and Data Vortex [6, 7]. Such characteristics, together with very high port count on a single switch fabric make DOS attractive for data center applications where the traffic patterns are known to be bursty with high temporary peaks [13]. DOS exploits the unique characteristics of the AWGR fabric to reduce the delay and complexity of arbitration. We present a detailed analysis of DOS using a cycle-accurate network simulator....

• Type: Journal
• Year: 2010
• Where: ANCS
• Authors: Xiaohui Ye, Yawei Yin, S. J. Ben Yoo, Paul Vincent Mejia, Roberto Proietti, Venkatesh Akella
• Keywords: ANCS 2010, Computer Networks, Data Center, Optical Switch, Switch Fabric