Wavelength-division-multiplexing optical Benes-type networks with simultaneous space-wavelength switching

Haitham S. Hamza, Jitender S. Deogun

Research output: Contribution to journalArticlepeer-review


We propose new wavelength-division-multiplexing (WDM) optical interconnect architectures with simultaneous space-wavelength switching capability and reduced complexity. The proposed architectures improve over existing space-wavelength Benes networks, as these require the same number of stages and hardware components as a pure space Benes network. In addition, wavelength conversion in the proposed designs occurs only between two predefined wavelengths, eliminating the need for expensive wide-range wavelength converters used in most existing designs. We develop and characterize three families of WDM Benes networks with reduced complexity, and we present a typical architecture in each of the families. We also propose a routing strategy to establish connections over each of the proposed families. Finally, we present a comparative analysis of the properties of proposed architectures with respect to known WDM Benes networks. It is shown that the new designs require a smaller number of switching stages and space switches, and they have a smaller overall cost compared to most existing WDM Benes interconnects.

Original languageEnglish (US)
Pages (from-to)807-828
Number of pages22
JournalJournal of Optical Networking
Issue number11
StatePublished - Nov 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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