Light Fidelity

Li-Fi (Light-Fidelity) 100 Times Faster Than Wi-Fi

Scientists achieve first to operate this wireless technology out of the lab it promises to be up to one hundred times faster than conventional Wi-Fi networks.

It comes from the English words “ligth” and “fidelity” and promises to be more efficient than Wi-Fi networks, the most extensive in society. It is called Li-Fi and, after the first trials in the past two years, and may be the Internet channel in the future. Scientists have achieved a transfer rate of up to 224 files gigabits per second, which would be equivalent to download 18 movies (1.5 GB each). This is the first time achieved outside the laboratory through this wireless technology to transmit high-speed data communication using light instead of the traditional use of radio waves.

This technology can “change the way the internet is used to be.” The need for bandwidth to transfer files and increasing popularizing permanently connected electronic devices has forced the companies involved to seek a new approach. One of the more interesting alternatives, Li-Fi, uses a light emitting diode (LED) of a watt. Integrated microprocessor, this little bulb can achieve flows faster than current data technology solutions.

Scientists have proven the potential for this innovation. They have designed a smart lighting solution for industrial environments where data communication is via light. They are also doing on a pilot project creating a Li-Fi network to access the Internet in offices.

Despite the apparent virtues of this technology, there would still be a long way to go, as it would require a redesign of many of the sending and receiving computers existing telecommunications today. Furthermore, it is estimated that one of the advantages of this technology is that it does not cause interference with other systems, though light waves used are not able to overcome the walls.

The scientist at the University of Edinburgh (Scotland) Harald Haas, a pioneer in Li-Fi technology, demonstrated in 2011 that the flickering light of a single LED (imperceptible to the human eye) was able to transmit more data than an antenna telephony. This technology uses the precept of Visible Light Communication (VLC), a medium that uses visible light from 400 to 800 terahertz (THz).

To understand, experts works basically as an advanced Morse code. Experts, however, believe that the Wi-Fi and Li-Fi networks will coexist in the future for more efficient and secure networks. Although not yet commercialized, there are many companies already investigating opportunities to market solutions based on this technology.

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