Optimal lightpath routing and rerouting in WDM networks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations


The high throughput provided by WDM technology in fiber optic networks and the emergence of high speed all-optical wavelength converters have attracted extensive research on lightpath routing in WDM networks. Given a connection request, it is desirable to find a minimum cost lightpath or semi-lightpath to establish the connection without interrupting any existing connections. When a connection cannot be established without rerouting, one would like to establish a connection after rerouting a minimum number of existing lightpaths. In this paper, we present an efficient algorithm for computing a minimum cost route among routes requiring minimum cost reroutings. Our results provide either improvements or generalizations of several recent results in lightpath routing/rerouting.

Original languageEnglish (US)
Title of host publicationConference Record / IEEE Global Telecommunications Conference
Number of pages5
StatePublished - 2001
EventIEEE Global Telecommunicatins Conference GLOBECOM'01 - San Antonio, TX, United States
Duration: Nov 25 2001Nov 29 2001


OtherIEEE Global Telecommunicatins Conference GLOBECOM'01
Country/TerritoryUnited States
CitySan Antonio, TX


  • Minimum cost lightpath routing and rerouting
  • WDM all-optical networks

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change


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