Alcatel

Caroline Blaizot

Ludovic Noirie

Emmanuel Dotaro

A method of detecting switching subnodes in a monoblock wavelength division multiplex optical switching node, each subnode corresponding to a given level of granularity and to a given switching function. The method includes collecting information concerning how traffic is crossing an initial monoblock switching node, defining the granularity and switching function of the subnodes to be detected, considering each subnode successively in an order corresponding to reducing switching constraints and, for each subnode, selecting all or part of the traffic of an incoming granularity and an outgoing granularity that satisfy the switching constraints of the subnode concerned.

Method of detecting switching subnodes for switching wavelength division multiplexes

A switch for an optical transmission network using wavelength division multiplexing has pinput ports receiving pwavelengths and first switching means for switching the pwavelengths to poutput ports, qinput ports receiving qbands of wavelengths and second switching means for switching the qbands to qoutput ports, rinput ports receiving rgroups of bands and third switching means for switching the rgroups of bonds to routput ports. The three switching means consist of a single switching matrix adapted to couple any of the p+q+rinput ports to any of the p+q+routput ports. This single-matrix architecture can switch all the granularities at the same time, which facilitates reconfiguration as a function of evolution of the traffic to be switched.

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Montigny le Bretonneux, France

Caroline Blaizot