Minimizing drop cost for SONET/WDM networks with 1/8 wavelength requirements

Charles J. Colbourn, Peng Jun Wan

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


SONET/WDM networks using wavelength add-drop multiplexing can be constructed using certain graph decompositions used to form a "grooming," consisting of unions of certain primitive rings. The existence of such decompositions when every pair of sites employs no more than 1/8 of the wavelength capacity is determined, with few possible exceptions, when the ring size is a multiple of four. The techniques developed rely heavily on tools from combinatorial design theory.

Original languageEnglish (US)
Pages (from-to)107-116
Number of pages10
Issue number2
StatePublished - Mar 2001
Externally publishedYes


  • Primitive ring
  • Ring grooming
  • SONET ring
  • Wavelength minimization

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications


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