OKI : OKI, la vitesse supérieure

Posté le 2008-04-02 04:01:00 | par: Daimaou | 7 Commentaires
Catégories: PC | Tags: OKI, OPTICAL, JAPAN, DATA

OKI, la vitesse supérieure

Oki Electric Industry annonce être parvenu à atteindre une vitesse de téléchargement de 160 Gigaoctets par seconde avec leur nouvelle technologie de signal optique, pour vous faire une idée de la vitesse, elle permet de télécharger 4 films ou 8 heures de données en tout juste UNE seconde.

Afin d'arriver à ce chiffre, les ingénieurs d'Oki ont développé le "3R Regenerator" qui utilise une technologie de "ré-amplification" et de "re-formation" du signal optique pour éviter que celui-ci ne se détériore avec la distance. Grâce à cette technique, il est, en théorie, possible de transmettre des données à très haute vitesse sur 20.000 kilomètres.
Toujours au chapitre théorique, une vitesse supérieure à 200 Gigaoctets par seconde serait accessible.

Des chiffres qui font tourner la tête...

Oki Electric Industry Co., Ltd. (TOKYO:6703) announced it is the world’s first to achieve all optically regenerated transmission, which enables unlimited transmission of 160Gbps optical signals with single wavelength. To demonstrate the results of this project, OKI used an optical test-bed provided by the National Institute of Information and Communications Technology (NICT)’s Japan Gigabit Network II (JGN II)(1). The research that led to OKI’s achievement was conducted as part of the "Research and Development on Lambda Utility Technology,” under the auspices of NICT.

“This result proves that we can now transmit data at 160Gbps data, a speed equivalent to transmitting four movies, approximately 8 hours of data, in a single second. This amount of data at this speed can be sent over distances greater than the length of Japan, which is about 3,000km, and in fact to the other side of the planet, which is about 20,000km,” said Takeshi Kamijo, General Manager of Corporate R&D Center at OKI. “160Gbps data transmission uses an ultra high-speed optical communication technology that is expected to be commercialized in 2010 or after. OKI will analyze the findings from the field trial and develop a commercial-level 160Gbps optical 3R Regenerator.”

In a conventional optical communication system, an optical amplifier is placed every 50 to 100 km to compensate for propagation loss. Because signal distortion and timing jitter accumulate during transmission, the faster the speed of transmission, the shorter the transmission range. Therefore, to achieve longer distance, optical signals are converted into electric signals before the transmission limit is reached and converted back into optical signals and re-transmitted after the signal processing is completed. However, the speed for batch signal processing is currently limited to 40Gbps. Therefore, technologies to efficiently regenerate optical signals without converting them to electric signals are required in order to achieve a transmission speed of over 100Gbps.

To do this, OKI developed an all-optical 3R Regenerator, which uses a specialized optical-repeater technology with functions for re-amplification, re-shaping to remove optical signal wave distortion, and re-timing to avoid timing jitter accumulation. With these advances, in theory, it is possible to achieve signal processing speeds of over 200Gbps.

OKI also developed a Polarization Mode Dispersion Compensator (PMDC) that adaptively mitigates the impact of the changes in transmission line characteristics that are unique to optical fiber. Polarization mode dispersion is a phenomenon whereby wave distortion increases in an oval-shaped fiber core. The dispersion value changes depending on the temperature or transmission environment. Because the faster the transmission speed, the more sensitive it is to such changes, a PMDC is indispensable for transmission systems operating at over 40Gbps. OKI’s newly developed PMDC adopts a design to fully leverage the optical 3R Regenerator.

In the field trial using this equipment, in principle, OKI proved there was hardly any limit to transmission distance. Though 40Gbps and 80Gbps transmission using all-optical 3R Regenerators has been done in the past, OKI is the first in the world to conduct a field trial using 160Gbps optical signal regenerators.

By evaluating the performance of all-optical 3R regenerators while changing the regenerator spacing, OKI achieved a maximum regenerator spacing of 380km, which is equivalent to transmitting at 160Gbps between Tokyo and Osaka with just one optical 3R regenerator.

The findings from this trial were reported at the general conference held by The Institute of Electronics, Information and Communication Engineers on March 20.

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Posté le Wed Apr 02, 04:38 par Leulapin, IT manager, tech enthusiast, Nantes, France
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Impressionnant en effet. Dire qu'en France il n'y a encore que quelques milliers de parisiens connectés en fibre

Posté le Wed Apr 02, 05:05 par LE, Student(geek-life), Troyes(aube, Champagne Ardenne)
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Cette techno sera surement dédié pour les connexions inter-continent

Posté le Wed Apr 02, 06:09 par Owzy, Student, Paris
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Waw, vraiment impressionnant mais cette technologie ne sera pas généralisé pour aujourd'hui, eh oué il va falloir attendre !

Posté le Wed Apr 02, 07:33 par weedkiller, étudiant, IT Manager, CEO, Bounty Hunter...
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decidement, parfois les news de akihabara, c'est pas très pertinent :

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=109&STORY=/www/story/03-28-2007/0004554820&EDATE

3.2To/s sur 80km... Et dans toute les technologies de transmission optique, il y a de la régération régulière de signal.

Posté le Wed Apr 02, 07:41 par Daimaou, Survivor, Tokyo - Japan
Home Page: http://www.akihabaranews.com
WOW parfois certains lecteurs devraient lire avant de poster... 20 000 KM (MAX)... ah bein oui c'est sur c est plus que 80... moins rapide mais bon...

PR Newswire

the first to break the 10 Tbit/s barrier for delivering data over a single optical fiber, the largest capacity ever transported over transoceanic distances (6Tbit/s), transmission of 100 Gbit/s data over 2,000 km, introduction of the L-Band amplifier, the first large-effective area fiber, and the first commercial all-Raman amplified DWDM system.

Puis

The experimental system transmitted 5.6Tbit/s of data through three 80-km spans.

Posté le Thu Apr 03, 07:04 par Mathiews, étudiant, IT Manager, CEO, Bounty Hunter...
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Bonjour,
A mon avis :
1GB = 1 gigabyte = 1 gigaoctet
1Gb = 1 gigabit = 8 fois moins qu'un gigaoctet

Ca farait 160 gigabit/sec soit 20 gigaoctets par seconde.

Posté le Fri Apr 04, 03:05 par Guillaume, Etudiants, France
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D'accord avec le précédent, 20 Go/s

Mais bon de toute façon, c'est bien beau de dire qu'on peut rapatrier plusieurs Go par seconde, tant qu'on n'aura pas enfin changé de système de stockage...

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