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The selective placement of additional Hybrid Raman-EDFA amplification provides an effective mechanism to improve the energy and spectral efficiency of mixed-line-rate WDM networks. The energy efficiency per GHz is increased up to 50% and the network capacity is doubled.
A reduced-complexity CO-OFDM transceiver is proposed and investigated for enabling elastic functionalities in the existing core network infrastructure. The transceiver scheme is based on a constant envelope optical OFDM and is capable to operate with polarization multiplexing. The system performance is evaluated and a potential deployment within the Telefónica I+D national network model is further...
We propose an optimization on the amplifier placement to enhance the energy efficiency of the future optical transport networks based on WDM with mixed line rate transmissions. Simulation results show significant energy efficiency per GHz improvements of up to 74% thanks to the deployment of additional amplifiers, allowing for the utilization of more energy and spectral efficient modulation formats.
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