DWDM optik ağlarda ekspres link yerleştirilmesi

ABSTRACTPLACEMENT OF EXPRESS LINKSIN A DWDM OPTICAL NETWORKOğuz ŞöhretM.S. in Industrial EngineeringSupervisor: Asst. Prof. Bahar Yetiş KaraJuly, 2005With the introduction of DWDM technology in telecommunication network systems,important advancements have been achieved in the problem of routing the increasingsignal traffic between demand-supply nodes. The choice of the links to open, the numberof links and routing of current traffic on these links in such an optical network system areimportant in terms of decreasing the complexity of the network and cost savings. Thestudy in this thesis firstly introduces the use of express links, which enables thoseobjectives, and then determines the appropriate network structure and routing. The studyintroduces two mathematical models as well as a lagrangian based heuristic for thesolution of the problem.Keywords: network loading problem, express linksiii