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The application of OTN switching on top of a WDM layer is evaluated in terms of energy and spectral efficiency (SE). Significant improvements in energy-efficiency-per-GHz and SE are demonstrated with respect to conventional WDM architectures.
We propose the selective placement of additional amplifiers to augment the energy and spectral efficiency of protected mixed-line-rate WDM scenarios. Significant energy efficiency per GHz improvements, network capacity enlargements and blocking reduction are achieved.
In this paper we evaluate the potential of Quality of Protection (QoP) schemes to improve the energy efficiency in optical transport networks. Different levels of flexibility, both in the digital and optical domains, are considered for simulations over a nation-wide reference network model. Increasing power savings are achieved as long as the flexibility levels become higher, demonstrating the benefits...
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