Performance Evaluation of a Router with Tunable Recirculating Buffers in an Optical Burst S.pdfVIP

Performance Evaluation of a Router with Tunable Recirculating Buffers in an Optical Burst Switching Environment K. Merchant, J. McGeehan, A. Willner S. Ovadia P. Kamath, J. Touch, J. Bannister University of Southern California Intel Corporation USC – ISI {kkmercha, mcgeehan, willner}@ shlomo.ovadia@ {pkamath, touch, joseph}@ Abstract attractive because they offer at least one or more orders of magnitude lower power consumption with a smaller Optical burst switching presents challenges to the form factor compared to O-E-O (optics-electronics- design of optical routers. This paper considers how to optics) switches. Most of the recently published work dimension a router of N input data ports with an on OBS networks focuses on next-generation backbone additional M fiber delay lines (N+M internal ports) in a data networks (i.e. metropolitan or Internet-wide hop-and-span constrained network. The router networks) using high-capacity (i.e. 1 Tb/s) WDM incorporates tunable FDLs that can vary their size to fit switch fabrics [4–7]. It has been previously suggested the burst being buffered. Tunable fiber delays achieve that the OBS scheme can be adapted to future high- up to 20% higher throughput than static fiber delays at speed enterprise networks in order to meet the growin