The Effect of Partial Conversion and Fiber Delay Lines in an OBS Switch With a Large Number of Wavelengt

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In this paper, the authors analyze an OBS switch endowed with both Wavelength Converters (WCs) and Fiber Delay Lines (FDLs) to resolve contention. They consider the case where the number of wavelengths is large by introducing a mean field model that provides exact results when the number of wavelengths tends to infinity. They have confirmed through simulations that the mean field model provides accurate approximations for switches with a large, but finite number of wavelengths, which are of interest in view of Wavelength Division Multiplexing (WDM). Furthermore, their model allows a very general behavior for the arrival process and the packet size distribution, as well as two different wavelength allocation policies: minimum horizon and minimum gap.