this is about Li-Fi technology ...fast and cheap optical version of WI-Fi based on visible light communication

1. By Amit Patole
The future is here!!!!

2. Li Fi means “Light Fidelity”.
At the heart of this technology is
the new generation Of high brightness
Light emitting diodes.
It is possible to encode data in
light by varying the rate at which the
LEDs flicker on and off to give different
string of 1’s and 0’s

3. Present Scenario
1.2 million 5 billion

4. Issues with radio waves

5. Electro magnetic spectrum

6. Different between the technologies

7. Working Process
LIFI offers an integrated light source
that is straightforward to integrate into
a projector. In this example consist of
5 primary sub-assemblies:
 Printed circuit board(PCB)
 RF power amplifier(PA)
 Bulb
 Enclosure

8. Users of LI-FI

9. Potential Application of LI-FI
Traffic lights
Intrinsically safe environment
Public internet Hotspot
On ocean beds

10. Advantages
 High security
 Easy to use
 Fast data
Transfer
 Reliable
 Harmless ness
 Low cost

11. Conclusion
The possibilities are numerous and can be
explored further. If his technology can be put in to
practical use , Every bulb can be used something like
a WI-FI hotspot to transmit wireless data and we will
proceed towards the cleaner, greener ,safer and
brighter future.