The Hi-Ring Architecture for Data Center Networks

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Optical technologies have long been used for standard telecom applications ranging from long haul to metro and access networks. With the rapid expansion of traffic in data center networks, the deployment of optical technologies for computationally intensive short reach networking has attracted a lot of attention. The main interest in photonics comes from the fact that optical technologies are known for providing high bandwidth at low-cost and low power consumption. Unlike electrical switching, optical switching offers bit rate-independent operation; thus, the required processing capacity can greatly be reduced as there is no need to perform operations like electrical demultiplexing of high-speed data streams. Moreover, simultaneous switching of wavelength channels using an optical circuit switch yields energy-efficient operation, which is crucial to data centers.
Original languageEnglish
Title of host publicationOptical Switching in Next Generation Data Centers
EditorsFrancesco Testa, Lorenzo Pavesi
Number of pages14
Publication date2018
ISBN (Print)978-3-319-61052-8
Publication statusPublished - 2018


  • Engineering
  • Communications Engineering, Networks
  • Microwaves, RF and Optical Engineering
  • Signal, Image and Speech Processing
  • Computer Communication Networks
  • Information Systems Applications (incl. Internet)
  • Power Electronics, Electrical Machines and Networks
  • Time division multiplexing (TDM)
  • Wavelength division multiplexing (WDM)
  • Space division multiplexing (SDM)
  • Multidimensional switching
  • Hi-Ring architecture


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