Design of wavelength-convertible edge nodes in wavelength-routed networks

Yukinobu Fukushima, Hiroaki Harai, Shin'ichi Arakawa, Masayuki Murata

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Wavelength converters reduce the connection blocking probability in wavelength-routed networks by eliminating the wavelength continuity constraint. We develop a method for deployment of wavelength converters in wavelength-routed networks with an overlay model. In these networks, most wavelength converters are deployed on edge nodes to cover the difference in the numbers of wavelengths multiplexed on access and core links. Therefore reduction of wavelength converter cost on edge nodes leads to minimizing the wavelength converter cost in the whole network. We propose an ingress edge node architecture with fixed wavelength converters that have limited wavelength convertibility but are more economical than full wavelength converters. In our architecture, each input access link of ingress edge nodes is equipped with fixed wavelength converters, and input wavelengths from the access links are evenly distributed on the output core link. As a result, competition for a free wavelength on an output core link is avoided. Simulation results show that our edge node architecture offers about 20% cost reduction compared with a node architecture that uses only full wavelength converters where networks are actually under operation and a full wavelength converter cost to fixed wavelength converter cost ratio is 3:1.

Original languageEnglish
Pages (from-to)196-209
Number of pages14
JournalJournal of Optical Networking
Volume5
Issue number3
DOIs
Publication statusPublished - 2006
Externally publishedYes

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Wavelength
converters
wavelengths
costs
Costs
cost reduction
Blocking probability
output
Cost reduction
continuity

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Atomic and Molecular Physics, and Optics

Cite this

Design of wavelength-convertible edge nodes in wavelength-routed networks. / Fukushima, Yukinobu; Harai, Hiroaki; Arakawa, Shin'ichi; Murata, Masayuki.

In: Journal of Optical Networking, Vol. 5, No. 3, 2006, p. 196-209.

Research output: Contribution to journalArticle

Fukushima, Yukinobu ; Harai, Hiroaki ; Arakawa, Shin'ichi ; Murata, Masayuki. / Design of wavelength-convertible edge nodes in wavelength-routed networks. In: Journal of Optical Networking. 2006 ; Vol. 5, No. 3. pp. 196-209.
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