Optical atm self-routing switching system with reduced...

Details Optical atm self-routing switching system with reduced... Optical atm self-routing switching system with reduced...

H - Electricity

04

Q

H04Q 3/52 (2006.01) H04L 12/56 (2006.01) H04Q 3/42 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2084102

In an optical ATM switching system, an optical ATM cell is produced in response to an incoming ATM cell so that it contains an optical routing bit in a timeslot corresponding to the destination of the cell. A first switching stage is provided for routing the cell from one of its inlets to one of its outlets in accordance with the routing bit contained in the cell and generating a routing signal indicative of the position of the outlet to to whichthe cell is routed. A second switching stage is connected to the outlets of the first switching stage for routing the cell to one of optical buffers in response to the routing signal from the first switching stage. Optical combiners are provided, each corresponding to a group of the optical buffers for combining outputs of the corresponding group of optical combiners.

Dans un système de sélection ATM, une cellule optique ATM est produite en réponse à l'entrée d'une cellule ATM de façon à contenir un bit de routage dans un intervalle de temps correspondant à la destination de la cellule. Une première phase de commutation est produite pour acheminer la cellule de l'une des entrées à l'une des sorties selon le bit de routage contenu dans la cellule et pour générer un signal de routage indiquant la position de la sortie vers laquelle la cellule est acheminée. Une deuxième phase de commutation est reliée aux sorties de la première phase pour l'acheminement de la cellule vers l'un des tampons optiques en réponse au signal de routage produit par la première phase de commutation. Des combineurs optiques sont fournis, chacun correspondant à un groupe de tampons optiques pour combiner les sorties au groupe correspondant de combineurs optiques.

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