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Performance analysis of an optical packet switch with shared parametric wavelength converters

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4 Author(s)
Okonkwo, C. ; Dept. of Comput. & Electron. Syst., Univ. of Essex, Colchester ; Almeida, R.C. ; Martin, R.E. ; Guild, K.

Wavelength conversion capability has been shown to significantly improve the blocking performance of all-optical networks. In order to transport payloads that may be of different bit-rates and modulation formats, a transparent wavelength conversion method is desirable. Recently, parametric wavelength converters, that are capable of multi-channel wavelength conversion for heterogeneous optical services, have been experimentally demonstrated for optical circuits. In this letter, we analyse the performance of an asynchronous optical packet-switch (OPS) architecture that exploits such devices. A sensitivity analysis of the number of converters, as a function of the main switch design parameters, demonstrate a significant reduction in the number of converters when compared with architectures employing single- channel wavelength conversion.

Published in:

Communications Letters, IEEE  (Volume:12 ,  Issue: 8 )