Copenhagen  - The frustration of trying to download a film online, watching the progress bar move mind-bogglingly slowly, may soon be a thing of the past.

Scientists have created the world’s fastest network that can download a movie faster than you can blink. Danish researchers achieved the feat by creating a next-generation optical fibre that transfers 43 terabits per second. Experts at Extreme Tech said that this means that they could use it to download a one gigabyte film in 0.2 milliseconds.The researchers at the Technical University of Denmark have now reclaimed the record for the fastest network, having previously lost it to experts at the Karlsruhe Institut für Technologie in Germany, who created a network able to reach speeds of 32 terabits per second.

To reclaim the title for the world’s fastest network, the Danish team used single multi-core optical fibre, which was developed by Japanese firm Nippon Telegraph and Telephone Corporation (NNT). This type of fibre contains seven cores - glass threads - instead of the single core used in standard fibres, which makes it possible to transfer more data. Incredibly, the fibre is the same width as standard fibre. The researchers say that the worldwide competition in data speed is contributing to developing the technology needed to accommodate the growth of data traffic on the internet. Such traffic is estimated to be growing by 40 to 50 per cent every year, and is set to soar as more people use internet-connected devices in the home and technology in cars becomes more complex.

Emissions linked to the total energy consumption of the internet as a whole make up more than two per cent of the global man-made carbon emissions, which puts it on a par with the transport industry. And these emissions are set to grow dramatically. ‘It is therefore essential to identify solutions for the internet that make significant reductions in energy consumption while simultaneously expanding the bandwidth,’ the researchers said.