Nokia Bell Labs makes submarine cables go blinkin’ fast

Finnish vendor Nokia has broken some submarine speed records using technology that doesn’t require replacing the cables.
Its Bell Labs unit, working out of its lab in Paris-Saclay, has developed a clever bit of kit that increases an optical network’s Baud (Bd) rate, which refers to the number of signalling events that are sent down the line every second. It differs slightly from bitrate, because with today’s modern networking gear, multiple bits can be transmitted during one si