Multi-stage switching system using optical WDM grouped links based on dynamic bandwidth sharing

Eiji Oki, Naoaki Yamanaka, Kohei Nakai, Nobuaki Matsuura

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A three-stage Clos switch architecture is attractive because of its scalability. From an implementation point of view, it allows us to relax the cooling limitation, but there is a problem interconnecting different stages. This article presents a three-stage switching system that uses optical WDM grouped links and dynamic bandwidth sharing. We call it a WDM grouped-link switch. The introduction of WDM makes the number of cables used in the system proportional to the switch size. Dynamic bandwidth sharing among WDM grouped links prevents the statistical multiplexing gain offered by WDM from falling even if the switching system becomes large. The WDM grouped-link switch uses cell-by-cell wavelength routing. A performance evaluation confirms the scalability and cost-effectiveness of this switch. An implementation of the WDM grouped link and a compact planar lightwave circuit platform is described. This architecture allows us to expand the throughput of the switching system up to 5 Tb/s.

Original languageEnglish
Pages (from-to)56-63
Number of pages8
JournalIEEE Communications Magazine
Volume41
Issue number10
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Switching systems
Wavelength division multiplexing
Telecommunication links
Bandwidth
Switches
Scalability
Cost effectiveness
Multiplexing
Cables
Throughput
Cooling
Wavelength
Networks (circuits)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Multi-stage switching system using optical WDM grouped links based on dynamic bandwidth sharing. / Oki, Eiji; Yamanaka, Naoaki; Nakai, Kohei; Matsuura, Nobuaki.

In: IEEE Communications Magazine, Vol. 41, No. 10, 10.2003, p. 56-63.

Research output: Contribution to journalArticle

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