Researchers of Karlsruhe Institute of Technology in Germany have set a new world record for the data transfer rate using a single laser at 26 terabits per second.
You can send up to 1000 High Definition [HD] DVDs in just one second through this laser.
The technique used is known as Fast Fourier Transform, that produces a laser beam at very high rate with data encoded in 325 distinct colours of light.
To send Terabits of data, it is encoded onto different light colours and sent over a fibre optic channel. At the receiving end, a detector is used to distinguish between the various colored data streams, based on tiny differences in arrival time and recombine them into a high-speed streams of 1′s and 0′s.