Denmark has created an optical fiber capable of transmitting 1.84 Petabits of data per second.

This is more than all the Internet traffic in the world per second. And all this - in one cable. The 1.84 petabits per second throughput was not easy to test and verify because no single computer can send or receive, let alone store, such a huge amount of data. The research team used dummy data on individual channels to test what the total throughput would be.