Terabits on "glass"

Everything new is, as a rule, completely forgotten old. So Japanese researchers remembered far from the latest technology and managed to increase the speed of data transmission over conventional optical networks dozens of times.



We are talking about several scientists from Tohoku University, Japan, who recalled the quadratic amplitude modulation technology (QAM - Quadrature Amplitude Modulation) and managed to apply it to modern methods of transmitting data on optics in such a way that hundreds of terabits per second can be transferred . Interestingly, so far, QAM technology has been used in digital TV tuners and some wireless protocols, and has almost nothing to do with wired data transmission. However, the Japanese managed to "cross" QAM with optics, thanks to a special laser, as a result of which the throughput of standard fiber optic cables increased by orders of magnitude.



This, of course, does not mean that in the near future we will be able to download HD movies in a couple of seconds, however, who knows, it is possible that sometime thanks to the staff of Tohoku University we will look at a modern network interface card in about the same Now we look at modems.

')

via Tech.co.uk