Ultra Broadband

London scientists build ultra broadband nearly three million times faster than UK home fibre optic internet connections.

Scientists in London claim to have achieved the world’s fastest-ever internet speed - quick enough download the entire Netflix library a split second. That's fast! Netflix has a combined library of over 50,000 titles.


A University College London-led team used amplifiers to enhance the way light carries digital data through fibre-optic broadband to achieve a record 178 terabits per second - almost three million times faster than the average UK home connection.


Dr Lidia Galdino (pictured), who led the research team at a lab in Bloomsbury, said such “ultra broadband” will underpin the next generation of the internet, supporting mobile 5G networks used by data-hungry applications such as driverless cars and smart cities infrastructure.


The new record was achieved by transmitting data in a greater range of colours than is typically used in optical fibre in order to increase the bandwidth. For the speed test, Dr Galdino sent computer-generated bits in a 25 mile fibre optic loop around a Bloomsbury lab.


The massive speed increases were made possible by building customised amplifiers to boost signal power, which would be needed at least every 25 miles if deployed commercially.


It meant her super-speeds - the equivalent of 178 million megabits per second - were about 2.8 million times faster than the Ofcom-rated average 64mbps British home broadband connection. Dr Galdino told the London Evening Standard: “I managed to achieve the highest bandwidth that has ever transmitted through the internet."


"I think the societal benefit is clear - fast internet for all and a more productive economy.

It’s important because internet traffic and data has been increasing exponentially over the last 10 years but we have reached the theoretical limit. The one other way to increase the capacity in optical fibre is increasing the range of wavelengths and colours that we can use, which is exactly what I’ve done. This is underpinning the next generation of communication systems.”


In good news for all of us: a global race is underway to make ultra-speed broadband networks available commercially.