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Emerging trends in optical transport networks aiming to support increasing data rates are reshaping the possibilities for network planning. The deployment of a flexible grid with multiple available channel bit rates and spectral widths gives way to a more clearly defined trade-off between spectrum and cost in the planning process. Furthermore, providing redundancy in these types of services is both...
Next-generation transport network nodes integrate optical switching of coarse-grained wavelength channels with electrical switching of fine-grained optical channel data units (ODUs). This node design aims at a compromise between improving the wavelength channel fill ratio and maximizing the optical bypass of full or near-full wavelength channels, thereby minimizing transponder requirements. Moreover,...
We propose a novel shared buffering architecture and an optimization framework to improve the cost-efficiency of virtually-concatenated OTN networks. We also show that collocated 3R and differential delay compensation results in minor degradation.
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