wiredinUSA August 2013

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wiredInUSA - August 2013 29 EUROPE NEWS
Alcatel-Lucent has createda new record
for the amount of data transmitted over
transoceanic distances on a single
optical fiber.
In a test carried out at Alcatel-Lucent’s
Innovation City campus in Villarceaux
near Paris, researchers from Bell Labs
successfully sent data at speeds of
31Tbps over 7,200km – a capacity said
to exceed that of the most advanced
commercial undersea cables by a factor
of three. This was achieved with a span of
100km – the distance between amplifiers
maintaining the entire length.
The experiment leveraged Bell Labs’
pioneering work in 200Gbps single
carrier data channels. At such speeds
and distances signal distortions and
noise make data recovery challenging.
To counter the problem, in this new test
Bell Labs researchers made use of new
detection techniques and harnessed
an array of technologies in modulation,
transmission, and external link signal
processing, twinned with advanced
error correcting coding.
New world record for
undersea data transmission
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