Gao C.Cankaya H.C.Patel A.N.Jue J.P.Wang X.Zhang Q.Palacharla P.2023-06-162023-06-1620119.78E+122162-7339https://doi.org/10.1109/ICTON.2011.5970959https://hdl.handle.net/20.500.14365/3556Vetenskap och Konst (KTH);acreo;Instytut Lacznosci - Panstwowy Instytut Badawczy;Vetenskapsradet;STAD-Stockholm2011 13th International Conference on Transparent Optical Networks, ICTON 2011 -- 26 June 2011 through 30 June 2011 -- Stockholm -- 87103In this paper, we address the problem of survivable traffic grooming and regenerator placement in optical WDM networks with impairment constraints. The working connections are protected end to end by provisioning bandwidth along a sequence of lightpaths by using a shared connection-level protection scheme. An auxiliary-graph-based approach is proposed to address the placement of regenerators and grooming equipment for both working and shared backup connections in the network with the goal of minimizing the total equipment cost. Simulation results show that the proposed algorithm outperforms the dedicated connection-level protection algorithm as the load increases. © 2011 IEEE.eninfo:eu-repo/semantics/closedAccessImpairmentRegenerator PlacementSurvivabilityTraffic GroomingWDM NetworkImpairmentRegenerator PlacementSurvivabilityTraffic GroomingWDM NetworkAlgorithmsAuxiliary equipmentRegeneratorsTransparent optical networksWavelength division multiplexingFiber optic networksConference Object10.1109/ICTON.2011.59709592-s2.0-80155184384