Latest Record Internet Speed (178 Tbps)

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Working with two companies, Xtera and KDDI Research, the research team led by Dr Lidia Galdino (UCL Electronic & Electrical Engineering), achieved a data transmission rate of 178 terabits a second (178,000,000 megabits a second) – a speed at which it would be possible to download the entire Netflix library in less than a second. The record, which is double the capacity of any system currently deployed in the world, was achieved by transmitting data through a much wider range of colours of light, or wavelengths, than is typically used in optical fibre. (Current infrastructure uses a limited spectrum bandwidth of 4.5THz, with 9THz commercial bandwidth systems entering the market, whereas the researchers used a bandwidth of 16.8THz.) The benefit of the technique is that it can be deployed on already existing infrastructure cost-effectively, by upgrading the amplifiers that are located on optical fibre routes at 40-100km intervals. (Upgrading an amplifier would cost £16,000, while installing new optical fibres can, in urban areas, cost up to £450,000 a kilometre.)