Access and metro networks based on WDM technologies

Katsumi Iwatsuki, Jun Ichi Kani, Hiro Suzuki, Masamichi Fujiwara

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)


This paper describes the technical issues of access and metro networks based on wavelength division multiplexing (WDM) technologies, some solutions, and an experimental demonstration. A WDM star access network with colorless optical network units (ONUs) is proposed. For realizing the colorless ONU, two approaches are introduced; optical carrier supply and spectrum slicing. In addition, a WDM metro ring network with scalable optical add/drop multiplexers (OADMs), namely the tapped-type OADM, is proposed to effectively accommodate the large amount of traffic issued from access networks. Prototypes are constructed and used to verify the feasibility of the proposed WDM technologies.

Original languageEnglish
Pages (from-to)2623-2630
Number of pages8
JournalJournal of Lightwave Technology
Issue number11
Publication statusPublished - 2004 Nov
Externally publishedYes


  • Optical add/drop multiplexing (OADM)
  • Passive optical network (PON)
  • Wavelength-division multiplexing (WDM)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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