Scientists at Japan's National Institute of Information and Communications Technology have set a world record for data transmission using commercially available optical fiber. It is 402 terabytes per second, which is 5 million times higher than the average speed of broadband Internet in Great Britain, "MIR 24" reported. This speed allows you to download 12500 movies per second. The scientists report that they used a previously unused range of wavelengths to do this. The team of scientists reported that the record was set in laboratory conditions. Further experiments will be needed to put these findings into practice. But they hope that this measure can be extended from the ocean to the distance, The Independent writes.