Microsoft and Facebook’s record-setting undersea cable sets another record

The world’s highest capacity undersea cable could be capable of speeds that are 20 percent faster than thought theoretically possible. A recent experiment using 16QAM modulation achieved record transfer speeds of 26.2 Terabits per second on a 4,000 mile transatlantic cable jointly owned by Facebook and Microsoft. This represents a 20 percent improvement on the 20 Tbps each pair of the cable’s eight optic fibers was originally thought capable of, according to the team of researchers