Scalable performance evaluation of a hybrid optical switch

Hai Le Vu, Andrew Zalesky, Eric W.M. Wong, Zvi Rosberg, Syed Murtaza H. Bilgrami, Moshe Zukerman, Rodney S. Tucker

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


This paper provides new loss models for a hybrid optical switch (HOS) combining optical circuit switching (OCS) and optical burst switching (OBS). Exact blocking probabilities are computed when 1) no priority is given to either circuits or bursts and 2) circuits are given preemptive priority over bursts. Because it is difficult to exactly compute in realistic scenarios, computationally scalable approximations are derived for the blocking probability. The sensitivity of the analytical results to burst length and circuit holding-time distributions is quantified by simulation. It is demonstrated how the proposed approximations can be used for multiplexing-gain evaluation of a hybrid switch. In addition, the extension of the proposed single-node model to a network model composed of OCS, OBS, and hybrid switches is outlined.

Original languageEnglish
Article number1522388
Pages (from-to)2961-2973
Number of pages13
JournalJournal of Lightwave Technology
Issue number10
StatePublished - 1 Jan 2005


  • Blocking probability
  • Hybrid optical switching
  • Optical burst switching (OBS)
  • Optical ciruit switching (OCS)
  • Wavelength-division multiplexing (WDM)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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