Allocation of wavelength converters in all-optical networks
Optical networks
Optimal placement of wavelength converters in trees, tree-connected rings, and tree of rings
Computer Communications
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In this article the increasing use of WDM systems in telecommunications networks is highlighted, and the potential role for wavelength conversion in future upgrades of such systems is reviewed. Techniques for achieving wavelength conversion by all-optical means using nonlinearities in semiconductor optical amplifiers are explained, and experimental results obtained at BT Laboratories are used to illustrate the state of the art