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Several lightpaths can be switched as a single entity, so that only one pair of transmission ports will be consumed at every intermediate node, which facilitates port savings in Wavelength-Division Multiplexing (WDM) optical networks. However, in Elastic Optical Networks (EONs), the lightpath does not occupy a fixed wavelength but a group of continuous and orthogonal subcarriers with the flexible...
With the number of wavelengths in fibers increasing, the number of optical switching ports in conventional Optical Cross-Connect (OXC) keeps enhancing, so that waveband grooming technique is proposed to save the switching ports in OXC. Most of previous works focused on waveband grooming in single-domain optical network. Since the current optical backbone is actually divided to multiple domains according...
In this paper, we study the waveband switching for wavelength-level demands and the traffic grooming for sub-wavelength-level demands in multi-granularity optical networks and propose a new routing algorithm called multi-granularity grooming based on Integrated Grooming Auxiliary Graph (MG-IGAG) to save the cost by reducing the number of switching ports in optical-cross connects. In MG-IGAG, we develop...
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