Li-Fi is a new paradigm for optical wireless
technology to provide unprecedented connectivity within a localized
data-centric environment. The increasing demand for higher bandwidths, faster
and more secure data transmission as well as environmental and undoubtedly
human friendly technology heralds the start of a major shift in wireless
technology, a shift from RF to optical technologies.
Li-Fi, an
alternative to Wi-Fi that transmits data using the spectrum of visible light,
has achieved a new breakthrough, with UK scientists reporting transmission
speeds of 10Gbit/s more than 250 times faster than ‘super fast’ broadband.
The fastest speed
previously reported was 3Gbit/s, achieved earlier this year by the Fraunhofer
Heinrich Hertz Institute in Germany. Chinese researchers also claimed this
month to have produced a 150Mbp/s connection, but some experts were doubtful
without seeing further proof.
Many experts
claim that Li-Fi represents the future of mobile internet thanks to its reduced
costs and greater efficiency compared to traditional Wi-Fi.
Both Wi-Fi and
Li-Fi transmit data over the electromagnetic spectrum, but whereas Wi-Fi utilizes
radio waves, Li-Fi uses visible light. This is a distinct advantage in that the
visible light is far more plentiful than the radio spectrum (10,000 times more
in fact) and can achieve far greater data density.so world can enjoy with this
much of speed no longer.
By : Harsha vidunuwan
