[torcete]

"Repeaters are included every 40-80 km to keep the signal strong."

Does it mean that there's a ton of repeaters under the sea? Where do they get the power from?

[throawayonthe]

i believe they're simply powered by the electric conductors bundled with the cable

the extra interesting part i think is how they amplify the signal without having to decode it, just optically

https://en.wikipedia.org/wiki/Submarine_communications_cable...

[namibj]

They are like bulbs on an old-school Christmas tree light string, all in series with just one insulated conductor between.

[madaxe_again]

Along the same cable. Data cables usually carry power to some degree too, for their own use.