Backup resource reoptimization for survivable optical network

Xiao Fei Cheng, Chao Lu, Kumaran Veerayah

Research output: Journal article publicationJournal articleAcademic researchpeer-review


A backup resource reoptimization scheme is presented. The presented scheme dynamically adjusts backup lightpaths and reoptimizes the optical network resources. Link load and link reliability that vary with time are considered in this reoptimization scheme. Reserved backup lightpaths are dynamically adjusted to avoid traversing both the heavily loaded links and the unreliable links during the network operation. A heuristic algorithm is presented to achieve fast online backup resource reoptimization. Simulation results show that the presented backup resource reoptimization scheme reduces the network blocking probability while improving the robustness of optical networks against multiple link failures, and thus improves the network performance.
Original languageEnglish
Article number108201
JournalOptical Engineering
Issue number10
Publication statusPublished - 1 Oct 2005
Externally publishedYes


  • Bandwidth
  • Optical communication
  • Protection

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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