Data-over-light link Li-Fi demonstration offers route to transform internet usage

April 22, 2014 // By Paul Buckley
At the University of Edinburgh, Harald Haas and his team are claiming another breakthrough in Li-Fi technology by demonstrating that up to 1.1 Gbps can be transmitted using light waves from micro LEDs over a distance of 10 metres using less than 0.5 W power.

Haas is a Professor at the University of Edinburgh and Chief Science Officer (CSO) and co-founder of pureLiFi.

The demonstration equates only to 5% of the power of a typical 10W LED light bulb but proves the point that lights can be dimmed down while high data rates and coverage are maintained. Moreover, the distance at which 1 Gbps can be achieved with a single colour LED is 10 times larger than had been reported previously.

The work was undertaken as part of the EPSRC funded Ultra Parallel-Visible Light Communications (UP-VLC) programme grant, in collaboration with partners from the Institute of Photonics at the University of Strathclyde, the University of Glasgow and the University of Oxford.

The latest discovery follows the successful demonstration by pureLiFi of the world’s first commercial Li-Fi product, Li-1st, during March at MWC 2014 and CeBIT 2014. pureLiFi added a second production run of the Li-1st during March 2014 to meet the high demand from industry customers worldwide. This new production run is being shipped in April.

“Li-Fi is revolutionising wireless communications and showing that Li-Fi can be the enabler of the emerging Internet of Everything. By transmitting data at speeds above 1 Gbps and record distances of 10 metres at a fraction of the power of typical LED bulbs, we continue to make the technological leaps and bounds that make Li-Fi a technology that could transform the way we use the internet in the near future,” explained Professor Harald Haas, CSO and co-founder of pureLiFi.