Long-distance mutualized transmission method using optical...

H - Electricity – 04 – J

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H04J 14/02 (2006.01) H04L 7/00 (2006.01) H04J 3/06 (2006.01) H04L 7/04 (2006.01)

Patent

CA 2508296

The invention relates to a method and a device for the transmission of data over an optical fibre comprising: (i) a step involving the wavelength multiplexing of signals originating from a plurality of monochrome transmitters, each presenting a specific wavelength; and a step involving the modulation, by the information to be transmitted, of a channel carrier. The invention is characterised in that the synchronisation of each of the aforementioned transmitters is controlled by a common clock. The invention also relates to a negative feedback circuit for a device used to transmit data over an optical fibre, which is characterised in that it generates a frequency marker in order to inject an interfering spectral signal from a transmitter. Said circuit comprises a means of detecting the output signal from a gate in order to act on a means that is used to phase lock the transmitter in order to obtain the desired spectral transformation for each marker.

Procédé et équipement pour la transmission de données sur une fibre optique comportant une étape de multiplexage en longueur d'onde des signaux provenant d'une pluralité d'émetteurs monochromes présentant chacun une longueur d'onde propre et une étape de modulation par l'information à transmettre d'une porteuse réalisée par canal, caractérisé en ce que le cadencement de chacun desdits émetteurs est piloté par une horloge commune.Elle se rapporte en outre à un circuit de contre~réaction pour un équipement de transmission de données sur une fibre optique caractérisé en ce qu'il génère un marqueur fréquentiel pour injecter un signal spectral perturbateur d'un émetteur, et comporte un moyen de détection du signal de sortie d'une porte pour agir sur un moyen d'asservissement de la phase de l'émetteur pour obtenir la transformation spectrale désirée de chaque marqueur.

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