NTT completes 14-Tbps transmission tests on optical fiber line

06 Oct 2006

NTT reported that it has successfully demonstrated the ultra-large capacity optical transmission of 14Tbps over a single 160-km long optical fiber.

The value of 14Tbps greatly exceeds the current record of about 10Tbps and so claims the record of the world's largest transmission capacity, NTT said.

NTT reported the result in a post deadline paper in the European conference on optical communication (ECOC) that was held in Cannes, France from September 24 to 28.

The present core optical network is an optical transport network with about 1Tbps capacity.

Based on the wavelength-division-multiplexing (WDM) of signals with the channel capacity of 10 Gbps, it uses optical amplifiers with the bandwidth of about 4THz.

NTT said data traffic has been doubling every year due to the rapid spread of broadband access and that there is a need to lower the cost and at the same time raise the capacity of existing fiber network while maintaining its reliability as the dominant communication infrastructure.

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