Otn Switching In Protected Transport Networks: Spectral, Cost And Energy Efficiency Evaluation

The introduction of OTN switching on top of the WDM layer is analyzed in terms of spectral, cost and energy efficiency in a core network with mixed-line-rate transmissions and dedicated protection 1+1. The simulation results show significant improvements in the utilization of network resources by solely installing OTN switching matrices in the optical core nodes and applying grooming. The spectral efficiency can be improved in up to 567 percent, whereas the cost and energy efficiency can be enhanced in up to 564 and 1335 percent, respectively, with respect to the conventional scenarios.