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New wi-fi system to provide 100 times faster internet

Monday, March 20, 2017

London: Scientists have developed a new wireless internet based on harmless infrared rays that is 100 times faster than existing wi-fi network and has the capacity to support more devices without getting congested.

Slow wi-fi is a source of irritation that nearly everyone experiences. Wireless devices in the home consume ever more data, and it is only growing, and congesting the wi-fi network, researchers said.

The wireless network developed by researchers at Eindhoven University of Technology in The Netherlands not only has a huge capacity - more than 40 Gigabits per second (Gbit/s) - but also there is no need to share since every device gets its own ray of light.

The system is simple and cheap to set up. The wireless data comes from a few central 'light antennas', for instance mounted on the ceiling, which are able to very precisely direct the rays of light supplied by an optical fibre.

The antennas contain a pair of gratings that radiate light rays of different wavelengths at different angles ('passive diffraction gratings'). Changing the light wavelengths also changes direction of the ray of light. Since a safe infrared wavelength is used that does not reach the vulnerable retina in your eye, this technique is harmless.

If you walk around as a user and your smartphone or tablet moves out of the light antenna's line of sight, then another light antenna takes over, researchers said.

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