H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 11/00 (2006.01)
Patent
CA 2644609
A wavelength multiplex signal (WDM1, WDM2) having a plurality of channels is supplied to a wavelength-selective switch (WSS1, WSS2) which has a tunable, optical band rejection filter (TUF1, TUF2) at at least one input or output. In addition, a controller is provided which is designed such that before a switching operation by the switch (WSS1, WSS2) a channel to be switched is locked by means of the band rejection filter (TUF1, TUF2), the switching operation is performed and then the channel is unlocked.
Selon l'invention, un signal (WDM1, WDM2) de multiplexage en longueur d'ondes présentant plusieurs canaux est amené à un commutateur sélectif de longueur d'ondes (wss1, wss2) qui présente, au moins à une entrée ou une sortie, un filtre coupe-bande (TUF1, TUF2), optique réglable. En outre, il est prévu une commande qui est réalisée de sorte qu'avant une opération de commutation du commutateur (WSS1, WSS2), un canal à commuter est bloqué au moyen du filtre coupe-bande (TUF1, TUF2), l'opération de commutation est effectuée et le canal est ensuite bloqué.
Nokia Siemens Networks Gmbh & Co. Kg
Sim & Mcburney
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