Li-Fi

Li-Fi : "Future Of Wireless Networks"*

Introduction:

Hello, Friends as we promised to bring a new technology in depth for you, which could change the world. So, its  Li-Fi(Light Fidelity) which could soon replace Wi-Fi  or will work with Wi-Fi in recent years*.

I can pretty understand that it may be an "Ultra Shock" for you  all to hear some replacement for our Life-Saver "Wi-Fi" :p :)

So, Now we will see Li-Fi in details.

What is Li-Fi?

Light Fidelity or Li-Fi is like a Visible Light Communications (VLC) system running wireless communications travelling at very high speeds.
Li-Fi uses common household LED (light emitting diodes) lightbulbs to enable data transfer, boasting speeds of up to 224 gigabits per second.
The term Li-Fi was coined by University of Edinburgh Professor Harald Haas . Haas envisioned light bulbs that could act as wireless routers.
What a marvelous invention this is!!!! Just imagine how great it would be to download 18 movies of 1.5 GB each in just one second.

How Li-Fi creates Communication?

This Optical Wireless Communications(OWC) technology uses light from light-emitting diodes (LEDs) as a medium to deliver networked, mobile, high-speed communication in a similar manner to Wi-Fi.

Visible light communications (VLC) works by switching the current to the LEDs off and on at a very high rate, too quick to be noticed by the human eye.
Also,multi-colored RGB (Red/Green/Blue) LED's at retina size could be engineered to send and receive a wider range of signals than single-colored phosphor-coated white LED's

Working of Li-Fi:

A LED lighting fixture encodes and modulate the streaming content or message data from Internet or Server as light output with rapid rate of switching current(naked to human eye) to a receiving photo detector, which converts the changes in light intensity to electrical current.
In turn, the electrical signal is converted into binary data stream and then it is sent to any device like laptops, mobiles connected to the system.
However, working of Li-fi based system is purely dependent on Receiver dongle.
As Li-Fi is still in research phase so many new things could rise up to increase the capability and efficiency of Li-fi.

Implementation Of Li-Fi:

Li-fi based Commercial Office

Advantages of Li-Fi:

• Lab tests have shown that Li-Fi can hit speeds 100 times faster than current Wi-Fi systems which uses radio waves to transmit data.
• The system uses visible light communication between 400 and 800 terahertz to transmit messages in binary code. 
• Visible light cannot pass through walls, making Li-Fi a much more secure system, and less susceptible to interference.
•  Useful in electromagnetic sensitive areas such as in aircraft  cabins, hospitals and nuclear power plants without causing electromagnetic interference.
  So Friends in Future if 15 millions LED or Illumination Device  is enabled with Li-Fi microchip then we would not only have LED's but also Li-Fi deployed for cleaner, greener and eco-friendly environment where we can live happily and with all data access in our  hand with tremendous speed.
  

How tremendous we are achieving things which we only dreamt in Past..

Thanks! For Reading this. And Apologies for Post delay .We will keep you updated about any new updates and trending technology.

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(Reference- Wikipedia,  TED Videos, Articles on Li-Fi)
(*-content and capability may change according to research conducted. New advancement may rise up. With all respect to creator of Li-Fi- "Prof. Harald Hass"  we all are thankful for showing new way for communications)
(This is purely educational blog for spreading knowledge into world through digital media)