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Filterless optical transport networks relies on passive opticalinterconnections between nodes, i.e., on splitters/couplers and amplifiers.While different studies have investigated their design, none of them offer asolution for an optimal design. We propose a one step solution scheme, whichcombines network provisioning, i.e., routing and wavelength assignment within asingle mathematical model. Decomposition into two different types sub-problemsis then used in order to conceive an exact solution scheme. The first type ofsubproblem relies on the generation of filterless subnetworks while the secondone takes care of their wavelength assignment.  Numerical experiments demonstrate the improved performance of the proposedoptimization model and algorithm over the state of the art, with theimprovement of the solution for several open source data sets.

A Two Sub-problem Decomposition for the Optimal Design of Filterless Optical Networks