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Scientists Transfer 26 Terabits Per Second With A Single Laser

A group of scientists have managed to set a new data-transfer record of 26 terabits per second using a single laser.

Karlsruhe Institute of Technology in Germany have used a single laser to transfer data equivalent to 700 DVDs in a single second.

Professor Wolfgang Freude, the co-author of the paper published in journal Nature Photonics, said that it was not the fastest data transfer speed as an experiment transferring 100 Tbs per second has already been demonstrated.

What is unique about this breakthrough is that the researchers used a single laser to achieve the speed while the 100 Tb per second experiment involved 370 lasers.

“The problem was they didn't have just one laser, they had something like 370 lasers, which is an incredibly expensive thing. If you can imagine 370 lasers, they fill racks and consume several kilowatts of power,” he explained.

The researchers managed to achieve the transfer speed using a single laser by sending short pulses. These short pulses contain a number of colors of light in a ‘frequency comb’. When the short pulse of light is sent through optical fibre, the colors form 325 different colors each corresponding to its own data set, the BBC reports.