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Researchers from High-Speed Optical Communications (HSOC) team at the Technical University of Denmark (DTU) have proven that it is possible to transfer fully 43 terabits per second with just a single laser in the transmitter. This makes it a world record. Previously the record was set by researchers at Germany’s Karlsruhe Institute of Technology of 32 terabits per second.

This was made possible by using a new type of optical fibre which borrowed from Japanese telecoms giant NTT. The fibre contains seven glass threads (cores) instead of single glass thread which is used in normal fibres thus making it possible to transmit more data per second. However, even though it made of seven cores, the new fibre will not take up any more space than the normal fibre.

This research is in line to accommodate the consistent growth of data traffic on the internet which is estimated to be increasing by 40-50 percent annually. Moreover, the total energy consumption of the internet as a whole is corresponding to more than two percent of the global man-made carbon emissions. This puts internet at the same level as the transport industry in terms of energy consumption although the other industries do not grow 40 percent yearly. Hopefully this finding will help in reducing the energy usage of internet while expanding the bandwidth.

The result has been verified and exhibited in what is known as ‘post deadline paper’ at CLEO 2014 International Conference. The benchmark has now been raised to 43 terabits per second.

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