Mark.JUK writes: A team of researchers working in the Optical Networks Group at the University College London in England claim to have achieved the "greatest information rate ever recorded using a single [coherent optical] receiver", which was able to handle a record data speed of 1.125 Terabits per second (Tbps). The result, which required a 15 sub-carrier 8GBd DP-256QAM super-channel (15 channels of data) and total bandwidth of 121.5GHz, represents an increase of 12.5% relative to the previous record (1Tbps). Now they just need to test it using some long fibre optic cable because optical signals tend to become distorted when they travel over thousands of kilometers.
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