Abstract

Filterless optical networks use passive splitters and combiners with coherent optics, providing wavelength selection in the digital domain, while forming a passive fiber-tree topology between nodes. In this study, we investigate the optimal design of filterless optical networks while minimizing the number of required wavelengths. We propose a Dantzig–Wolfe decomposition model in which each subproblem aims to generate a potential filterless optical subnetwork, with a directed tree topology. The master problem then selects the best combination of subnetworks. Numerical experiments demonstrate significant performance improvement over previous work, reducing previous computational results by a factor of 2 to 10, depending on the size of the data instances.

Establishment of Dynamic Lightpaths in Filterless Optical Networks

Guillaume Mantelet, Andrew Cassidy, Christine Tremblay, David V. Plant, Paul Littlewood, and Michel P. Bélanger
J. Opt. Commun. Netw. 5(9) 1057-1065 (2013)

Tutorial on filterless optical networks [Invited]

Omran Ayoub, Oleg Karandin, Memedhe Ibrahimi, Andrea Castoldi, Francesco Musumeci, and Massimo Tornatore
J. Opt. Commun. Netw. 14(3) 1-15 (2022)

Design and Simulation of Filterless Optical Networks: Problem Definition and Performance Evaluation

Émile Archambault, Daniel O’Brien, Christine Tremblay, François Gagnon, Michel P. Bélanger, and Éric Bernier
J. Opt. Commun. Netw. 2(8) 496-501 (2010)

Design with low cost of equipment for metro filterless optical networks

Oleg Karandin, Omran Ayoub, Memedhe Ibrahimi, Andrea Castoldi, Rosanna Pastorelli, Francesco Musumeci, and Massimo Tornatore
J. Opt. Commun. Netw. 17(3) 198-208 (2025)

Optimized design of filterless horseshoe networks exploiting point-to-multipoint coherent transceivers

Mohammad M. Hosseini, João Pedro, Antonio Napoli, Nelson Costa, Jaroslaw E. Prilepsky, and Sergei K. Turitsyn
J. Opt. Commun. Netw. 15(9) 569-578 (2023)