In wireless communication environment, modern people continued to grow, the threat of excessive exposure to electromagnetic waves from mobile communication of the wan, the wireless local area network, all depend on the radio waves passing information, the higher the intensity of waves and transmission efficiency increases, but the potential risk to human health. Scientists are beginning to look for the wireless information transmission of radio waves, visible light become the best choice to secure to human body health, using the optical communication of information, visible light transmission as the alternative technology of wireless networks.

Leds as base stations

As early as in 2000, tanaka and SONY computer science at Japan's keio university institute of hills, is put forward to use leds as communication base stations, transmission of information; Tanaka and xiao feng, 2002, puts forward a set of power line carrier communication and LED visible optical data transmission system; 2008 Japanese taiyo yuden, displaying white LED wireless communication system, maximum transmission distance of 20 meters.

Brien at the university of Oxford in 2009, a 100 Mb/s (one million bits) per second rate of optical communication technology. In 2010 Germany's Fraunhofer institute of HHI, will increase the transmission rate of optical communication to 513 Mb/s.

Haas, a professor at the university of Edinburgh, UK, 2011 (Harald Haas), in public speaking, the LED display of visible Light communication technology, and named the LiFi (Light Fidelity, Light network), and we know the WiFi only there. Haas PureVLC was formed in 2012 (later renamed PureLiFi company, r&d LiFi products, LED lighting company Lucibel cooperation with France in 2015, plans to introduce support LiFi products this year.

Reduce electromagnetic wave

After ten years of research and development, to be commercialized in LiFi is out of the lab technology, the current highest LiFi technology transfer rate is up to 224 Gb/s (1 billion bits) per second, far more than WiFi transfer rate. Because LiFi information is sent through visible light, must in the LED lighting can and scope to be transmission, cannot penetrate the walls.

Is LiFi technology launched the first of this year, PureLiFi with Lucibel would promote LiFi function of LED lamps and lanterns, this kind of lamps and lanterns is both the function of wireless transmission. By the traditional lamps and lanterns is converted into a wave of LED lamps and lanterns, LiFi may obtain a lift, reduce the cost of construction LiFi infrastructure with obstacles. LiFi function of LED lamps and lanterns is listed, will become the LiFi into the market leader.

LiFi technology diffusion is one of the biggest challenges to build LiFi ecosystem, such as support LiFi function for the development of IC chip, as well as support LiFi communication equipment (such as smart phone, etc.), all need time and investment to achieve.

Sensitive to electromagnetic interference, will be the most intend to import LiFi place, hospital, nuclear power plant, petrochemical plant, and aircraft engine room, etc., will be a bridgehead LiFi is the most easy to attack. LiFi technology was born, will be able to promote the quality of the network, and reduce the electromagnetic wave is the benefit of the flood.