LiFi to enhance internet speed; will use Light Bulbs for communication

Time to throw your WiFi routers?

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What’s the highest peak value of your internet speed?

Study reveals that South Korea has the maximum internet speed that averages 24.6 Mbps, while India has the average peak value of 14 Mbps. Can you imagine your internet speed hop up to 1 Gbps and download a HD movie in seconds?

Well, that’s the revolution which took place this week, when Indian startup Velmenni tested a LiFi connection enabled on a LED bulb and found that the data travelled 100 times faster than a normal wi-fi speed. That was practically noted down as 1 Gbps, though the real World level testing is not yet performed, but laboratory tests shown out the theoretical speed to be 224 Gbps.

The world with billions of light bulbs in use could deliver wireless internet connectivity with a speed far beyond the WiFi speed, is not far from reality. This is how its inventor Harald Haas dreams about this technology. So, he took a step ahead and decided to act out of fictional world and then make it a reality to boost internet speed which is not easily envisioned.

Now, isn’t that amazing?

But how did Harald Haas invented LiFi Technology?

Harald Haas, one of the prominent German Physicist, figured out the idea of using light bulbs as wireless routers in Ted Talks, four years ago. (See the Ted Talk below)


Also check: Amazing Facts : Folding Piece of Paper could take it to the Moon. 

And many people wondered that this revolutionary idea or theory would be left in middle, unfulfilled like the other “Big Revolutionary Ideas”. But Haas, didn’t left his hope, in fact he began his journey after the gathering and founded pureLiFi with a group of people doing research in this technology since 2008.  This company is known fr its recognized leaders of LiFi technology, and has already produced two products.

How does LiFi works?

For Knowledge: LiFi is visible light communications , in short VLC, technology that provides bidirectional, high speed data being most secured in a similar manner of WiFi.

When a constant current is applied to an LED light bulb a constant stream of photons are emitted from the bulb which is observed as visible light. If the current is varied slowly the output intensity of the light dims up and down. Because LED bulbs are semi-conductor devices, the current, and hence the optical output, can be modulated at extremely high speeds which can be detected by a photo-detector device and converted back to electrical current. The intensity modulation is imperceptible to the human eye, and thus communication is just as seamless ad RF. Using this technique, high speed information can be transmitted from an LED light bulb.

How_VLC_works
How LiFi Technology Works- Source pureLiFi

How long will it take to launch the consumer friendly hotspots?

In an interview with International Business Times UK, CEO of Velmenni, Deepak Solanki said that it will take “almost three to four years” to make this technology available for consumers.

Any Drawbacks?

Major issue listed was, LiFi won’t be functional at outdoors. So, use of public WiFi will be functional and cannot be replaced by any public LiFi system (as LiFi cannot use direct sunlight as a means of communication).

Next thing, since LiFi uses visible light as a way of communication, so it won’t pass through walls. Therefore, you need to have LiFi bulbs in each and every room (may be even refrigerators) to enjoy uninterrupted connectivity.

Then, do I need to throw my WiFi router?

Nothing can be said unless LiFi bulbs come to the market. But throwing WiFi routers won’t be a good option because using WiFi with Lifi would provide you seamless experience of internet. One best way could be using WiFi for normal purpose and using LiFi hotspots for downloading huge stuffs from internet or for high speed purposes.

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