education is very important.

2. • Introduction of li-fi
•Genesis of li-fi
•Present scenario
•Issues with radio waves and light waves
•Principal of li-fi Technology
•Visible light communication
•Working of li-fi technology
•Comparisons between li-fi and Wi-Fi
•Future applications
•Conclusion
•References

3. LI FI- LIGHT FIDELITY TECHNOLOGY
transmission of data through illumination, that is sending data through
a LED light bulb that varies in intensity faster than human eye can follow.

4. •Invented by German physicist HARALD
HAAS ,from the university of Edinburgh, U.K
•He demonstrated it in the year 2012
HARALD HAAS

5. 1.4 Million 5 Billion

6. Issues with radio waves and light waves

7. • The on-off activity of LEDs enables a kind of data
transmission using binary codes.
• Switching on an LED is a logical ‘1’;switching it off
is a logical ‘0’.
• A light sensitive device (photo detector) receives the
signal and converts it back into original data.

8. Sending of data

11. Illustration of data transfer in Li-Fi

12. An Environment of li-fi

15. Petroleum and chemical plants
Petroleum and chemical plants Hospitals (in new medical
instruments)

17. • Li-Fi Technology is an emerging
technology and it overcomes many flaws of
traditional Wi-Fi.
• However, there are some drawback in
this technology and according to research ,
they will overcome in the future.

18. 1. New epoch of wireless communication: light fidelity
Authors: Megha Goyal, Dimple Saproo, Asha Bhagarshra,
Journal: International Journal of Innovative Research in Computer
and Communication Engineering ISSN/EISSN: 23209798 23209801
Year:2013 Volume: 1 Issue: 2
http://ijircce.com/upload/2013/april/52_New%20Epoch.pdf
2. Li-Fi (Light Fidelity)-The future technology In Wireless
communication
http://www.ripublication.com/ijaer.htm
3. Harald Haas, ‘Wireless data from every light bulb’, TED Global,
Edinburgh, July 2011.
4. en.wikipedia.org/wiki/visible_light_communication

19. THANK YOU