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Le câble sous-marin transpacifique PC-1 de NTT Com utilise la toute dernière technologie de transmission optique


News provided by

NTT Communications Corporation

Nov 06, 2011, 03:36 ET

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TOKYO, November 4, 2011 /PRNewswire/ --

- La capacité de PC-1 est plus que triplée et atteint 10 Tbps

Suite à la réussite du premier essai mondial de transmission optique à 100 gigabit par seconde (Gbps), annoncé au mois d'octobre, sur son câble sous-marin transpacifique PC-1, NTT Communications Corporation (NTT Com) a confirmé le 4 novembre la viabilité commerciale du signal numérique cohérent. En conséquence, la société a décidé d'incorporer, par le milieu de 2013, cette technologie inédite de transmission optique dans le PC-1. Cette modernisation triplera la capacité de transmission du PC-1 en la faisant passer de 3.2 Tbps à 10 térabits par seconde.

Le signal numérique cohérent est la toute dernière technologie en matière de transmission. Elle permet d'améliorer l'efficacité spectrale grâce à une modulation multiniveau telle que la modulation de phase et le multiplexage de polarisation. Elle permet aussi d'améliorer considérablement la sensibilité du récepteur en associant la détection cohérente et le traitement du signal numérique.

L'expansion de l'utilisation de l'informatique en nuage, des téléphones intelligents et des tablettes ainsi que la popularité croissante des téléchargements de musique/vidéo et des réseaux sociaux sont autant de facteurs contribuant à l'augmentation de la transmission des données. NTT Com est là pour répondre à la demande croissante en matière de capacité grâce à son câble sous-marin transpacifique PC-1 qui, parmi tous les câbles transpacifiques, relie le Japon aux États-Unis. NTT Com utilise le PC-1 pour fournir, à l'échelle mondiale, des services de réseau IP, les services de réseau en nuage Arcstar (TM) et des services en nuage.

« Notre câble sous-marin PC-1 est un système de communication international important pour les États-Unis et le Japon, comme l'a démontré le cataclysme du 11 mars. L'amélioration des capacités du PC-1, qui est le lien transpacifique le plus court, grâce à l'adoption des technologies les plus modernes vont permettre de répondre à la demande croissante en matière de trafic et sera très bénéfique pour les utilisateurs », estime Takahiro Sumimoto, PDG de PC Landing Corp.

Au mois d'octobre, PC Landing Corp., filiale de NTT Com et exploitant du PC-1, a réussi l'essai de transmission de communication optique à 100 Gbps en utilisant la technologie du signal numérique cohérent. L'essai, qui a été effectué sur plus de 9500 km de câble en fibre optique du PC-1, était soutenu par l'architecture optique optimisée du PC-1, y compris un positionnement et un arrangement efficaces des répéteurs optiques et de la fibre optique.

Veuillez consulter :

http://www.pc1.com/userfiles/file/pacific-crossing-and-infinera-complete-subsea-trial.pdf 

À propos de NTT Communications Corporation

Veuillez consulter http://www.ntt.com/index-e.html

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