Multicasting in Optical Transport Networks

The introduction of multicasting in optical transport networks is analysed and discussed. Three different optical path realization techniques, involving the multicasting function, are examined: the Multicast Wavelength Path (MWP), the Multicast Virtual Wavelength Path (MVWP) and the Partial Multicast Virtual Wavelength Path (PVWP). A performance evaluation model is reported and results of the performance analysis are discussed. In addition several optical cross-connect architectures, allowing multicasting to be achieved, are investigated and compared. Three different types of optical switches are considered: space division, delivery and coupling, and wavelength switches. Crucial aspects as the modularity, the complexity, the costs and some transmission aspects are taken into account in the analysis.

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