OPSquare: towards petabit/s optical data center networks based on WDM cross-connect switches with flow control

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Abstract

Scaling the capacity while maintaining low latency and power consumption is a challenge for hierarchical data center networks (DCNs) based on electrical switches. In this work we present a novel optical DCN architecture called OPSquare that potentially addresses the scaling issues by employing parallel intra- and inter-cluster switching networks based on distributed fast WDM optical cross-connect (OXC) switches and a novel top-of-rack (ToR) switch architecture. The WDM OXC switches with nanoseconds reconfiguration time allow flexible switching capability in both wavelength and time domains and statistical multiplexing. Packet loss, latency, throughput, multi-path dynamic switching with flow control operation, and scalability will be discussed and experimentally evaluation by employing a 4×4 OXC prototypes. The potential of switching higher-order modulation and waveband signals further proves the suitability of OPSquare architecture for Petabit/s and low-latency DCN by using optical switches with moderate radix.

Original languageEnglish
Title of host publicationICTON 2017 - 19th International Conference on Transparent Optical Networks
Place of PublicationBrussels
PublisherIEEE Computer Society
Pages1-4
ISBN (Electronic)978-1-5386-0859-3
ISBN (Print)978-1-5386-0860-9
DOIs
Publication statusPublished - 1 Sep 2017
Event19th International Conference on Transparent Optical Networks (ICTON 2017) - Girona Conference Centre, Girona, Catalonia, Spain
Duration: 2 Jul 20176 Jul 2017
Conference number: 19
https://icton2017.udg.edu/

Conference

Conference19th International Conference on Transparent Optical Networks (ICTON 2017)
Abbreviated titleICTON 2017
CountrySpain
CityGirona, Catalonia
Period2/07/176/07/17
Internet address

Keywords

  • data center network
  • optical flow control
  • optical packet switching
  • wavelength selective switch

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    Calabretta, N., Yan, F., & Miao, W. (2017). OPSquare: towards petabit/s optical data center networks based on WDM cross-connect switches with flow control. In ICTON 2017 - 19th International Conference on Transparent Optical Networks (pp. 1-4). [Mo.B3.5] IEEE Computer Society. https://doi.org/10.1109/ICTON.2017.8024740