OXC (optical cross-connect) is an evolved version of ROADM (Reconfigurable Optical Add-Drop Multiplexer). The most advanced iteration of a ROADM supports colorless, directionless, contentionless, and flex-grid. An optical transport network (OTN) containing ROADM nodes with different add/drop capabilities depicts numerous flexibilities for the set up of light paths, reconfigurability. Such capabilities permit network operators rapidly and flexibly act in response to network alterations. Reconfigurability. The main goal of this paper is to analyze the impact of several MB node architectures (namely baseline, common-band and compact MB node architectures) on the total network capacity and total network cost-per-bit, using a routing, modulation format, and spectrum assignment (RMSA) network planning. Mode-division multiplexing (MDM) is an attractive solution for future on-chip networks to enhance the optical transmission capacity with a single laser source.
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