A new fibre-optic cable no wider than a garden hose has enough bandwidth for 20 million people

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A new fibre-optic cable no wider than a garden hose has enough bandwidth for 20 million people

The cable runs between New York and London and is the latest in fibre optics. Flashing through the eight fibre-optic lines bundled inside its narrow confines, each just the width of a single human hair, is enough bandwidth for 20 million people. Every second, 3.2 terabits of data can fire down the cable, each single piece taking 0.00072 seconds to complete the 7,600-mile return journey from here to the US.

To put this almost incomprehensible data-transfer speed into perspective, it's almost a million times faster than the average broadband speed for UK households of just 3.6 megabits per second (Mbps).

Apollo's speed is courtesy of ultra-high- powered lasers, one here in the UK, the other in New York, that blast the signal down the fibre-optic lines. As no light source is powerful enough to retain its intensity over such vast distances, electrical repeaters costing 1 million each - and fed by a 10,000-volt current that runs through the cable itself - are attached at 30-mile intervals to amplify the signal.

More on this interesting topic http://www.dailymail.co.uk/...
By netchicken: posted on 7-7-2009








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