This paper studies the reconfiguration design and migration from an old path set to a new path set in multifiber wavelength-division-multiplexing networks. For the reconfiguration design phase, we introduce the functions of wavelength fragmentation cost and reconfiguration cost, and we propose a reconfiguration design that minimizes both wavelength fragmentation and the number of changed wavelengths. For the migration phase, we propose a migrating sequence algorithm that uses spare wavelengths to break the dependency cycle between before and after reconfiguration design sets and thus prevent service disruption. A numerical evaluation shows that the number of fibers is suppressed 4%–15% compared to the design without employing fragmentation cost and that the number of changed wavelengths is reduced by approximately 50%–90%.
© 2013 Optical Society of America
Original Manuscript: July 5, 2012
Revised Manuscript: May 9, 2013
Manuscript Accepted: May 13, 2013
Published: June 28, 2013
Akihiro Kadohata, Akira Hirano, Fumikazu Inuzuka, Atsushi Watanabe, and Osamu Ishida, "Wavelength Path Reconfiguration Design in Transparent Optical WDM Networks," J. Opt. Commun. Netw. 5, 751-761 (2013)