All you want to know about the Li-Fi, new technlogy from the future

1. The Li-Fi
Light-Fidelity
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2. Summary
 What is Li-Fi ?
 History of Li-Fi
 Specifications of Li-Fi
 Conclusion
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3. What is Li-Fi ?
LI-FI STANDS FOR LIGHT FIDELITY AND LI-FI IS TRANSMISSION
TECHNOLOGY OF DATA THROUGH ILLUMINATION.
LED BULB VARIES IN INTENSITY FASTER THAN THE HUMAN EYE CAN
FOLLOW.
LI-FI IS A TECHNOLOGY THAT USES THE LIGHT EMITTING
DIODES TO TRANSMIT THE DATAWIRELESSLY.
LI-FI IS FAST AND CHEAP OPTICAL VERSION OF WI-FI BASED ON
VISIBLE LIGHT COMMUNICATION (VLC).
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4. History of Li-Fi
1- The beginnings
 A German physicist Dr. Harald Haas, has started working on transmission of data using visible light back in 2004.
 In the year 2011 he first introduced to the world this new technology, LI FI in the TED talk show.
 He envisions a future where data for laptops and other mobile devices is transmitted through a light in a room.
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5. History of Li-Fi
2- Radio Waves Issues
 Capacity : Radio waves are limitted, scarce and expensive and we only have certain range of it.
 Efficiency : Too many eadio bases station that consume massive amount of energy.
 Availabality : Can not be used on airplanes and under water.
 Security : Penetrates through walls and can be intercepted.
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6. Specifications of Li-Fi
1- Alternative to Radio Waves in Electromagnetic spectrum
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7. Specifications of Li-Fi
2- Li-Fi construction
 The LiFi product consists of 4 primary sub-assemblies:
1. Bulb
2. Printed Circuit Board (PCB)
3. Radio Frequencey Power Amplifier Circuit (PA)
4. Enclosure
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8. Specifications of Li-Fi
3- How it work ?
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9. Specifications of Li-Fi
4- Advantages of Li-Fi
 Capacity :10000times more spectrum than Radio waves.
 Efficiency : Data through illumination and thus data transmission comes for free.
 Availabality :There Are An Estimated 14 Billion Light Sources On Earth And Each Can Be Easily
Converted IntoA Li-Fi Hotspot.
 Security : Light waves doesn’t penetrate through walls. Can’t be intercepted.
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10. Specifications of Li-Fi
5- Limitations of Li-Fi
 Visible light can not penetrate solid object
 Hight installation cost of the VLC
 Interferences from external light sources
 Interference with other electromagnetic waves
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11. Specifications of Li-Fi
6- Applications of Li-Fi
 Can be used in the places where it is difficult to lay the optical fiber
 In aircraft Li-Fi can be used to transmit data
 Li-Fi can be used for modern medical instruments
 .In traffic signals Li-Fi can be used
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12. Conclusion
The possibilities are numerous and can be explored further. If this technology can be put
into practical use, every bulb can be used something like Wi-Fi hotspot to transmit wireless
data and we will proceed onwards the
Cleaner, Greener, Safer and Brighter future.
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13. Thank You All!