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Optimal Provisioning of Elastic Optical Networks

The explosive growth of emerging applications and networking paradigms (e.g., Internet of Things (Iot), Software Defined Network (SDN), 5G slicing) leads to the rapid development of elastic optical networks (EON) for the next generation backbone networks. EONs can set up bandwidth-variable super channels by grooming series of finer-granularity (e.g., 12.5 Ghz or even 6.25 GHz) sub-carriers and adapting the modulation formats according to the quality of transmission (QoT) of lightpaths. In this study, we propose a new decomposition mathematical model that can solve exactly the EON provisioning problem with lightpaths satisfying the continuity and contiguity constraints while selecting a proper modulation scheme.