Undersea cables: what lies beneath

The internet is at its core an transnational network of networks, but few of us ever think about how connectivity works between continents. Jason Walsh examines the subsea cables connecting Ireland to the world

28th November, 2021
Undersea cables: what lies beneath
Undersea cable construction: a network of submarine cables transport data at the speed of light from Europe to the Americas and beyond

Connectivity today is a seamless affair, with data flowing to and from our devices to data centres and individuals near and far using a variety of technologies from copper wire and fibre optic cable to 4G and 5G cellular radio. Seamless most of the time anyway.

The internet as whole, though, needs all of these networks to interconnect with one another, something that requires hard infrastructure. The national rollout of fibre optic cables, particularly around...

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