What is Li-Fi technology? How does LiFi work? History of LiFi Technology,
Li-fi and Wi-fi are not the same things. Many people make the same mistake. Internet that is available through Light is called Li-fi. In today’s episode we will discuss what is Li-fi, history of Li-fi, how it works, benefits of Li-fi, when will Li-fi come, and Wi-fi Vs Li-fi. Make our writing worthwhile from the end.
Li-fi’s full-form Light-Fidelity. Li-Fi is a wireless optical networking technology that transmits data through lights. It is supposed to be 100 times faster than Wi-Fi. But still, the actual speed is not sure. Dramas, songs, etc will be downloaded in a blink of an eye on Li-Fi.
We know that we get an internet connection through light. The Wi-Fi we use today is transmitted through optical fiberglass, reducing the speed by about 40%. On the other hand, Li-fi can be used through household lamps. So wi-fi is considered to be nothing in front of the speed of li-fi.
History of LiFi Technology:
Professor Harald Hasch of Edinburgh University is the inventor of Li-fi. He first unveiled and introduced Li-Fi in 2011. He showed everyone how to communicate with a light. After the test results of Li-fi vs Wi-fi, li-fi was found to be much faster than wi-fi.
He then joined a company to further develop Li-Fi. And that company is called PURELIFI. Although many companies are currently working on li-fi.
How does LiFi work?
We first give an example with TV and remote. Then you will understand. When we give a signal to the TV with the remote, the channel of the TV changes. But why is this? Let’s find out.
We have seen that there is a light attached to the front of the TV remote. Also called an infrared bulb. Then, when you press a button on the remote, the specific signal on the remote lights up. Seeing the light from the remote, the sensor on the front of the TV understands it and works accordingly.
Suppose, to change the TV channel, if the light on the remote blinks twice, the channel changes. That is, whenever the remote is pressed, different signals are sent to the TV. And the TV understands the remote signal because the TV is pre-programmed.
Our li-fi technology is very much like that. But our TV remote has only one bulb installed. But Li-Fi will have lots of bulbs installed so that data transfer is faster and many people can use it simultaneously. Now let’s come to work.
First, the internet will come to your router from the li-fi Net server. Then the data will be transferred from the router to the light or bulb and you will get the service from there.
If I want to say in the language of the book, then I will say that the light from the LED bulb captures data at frequencies. And the data is exchanged, through LiFi-supported devices. Then a PhotoSensitive Detector converts the light frequencies into signals and converts them into electronic data systems. And that’s how Li-Fi works.
Although the technology is only being used in industrial applications, it will soon make its way into smart homes. It is predicted that future home and building automation will continue to rely on LiFi to be fast and secure.
Advantages of LiFi (Lifi vs Wifi):
From what we have known so far, we may have known about the benefits of fast speed. Now let’s know about some more benefits.
1. The first advantage we already know is its great speed. On Li-Fi you can get speeds up to around 100 GBPS. Also, Li-fi has 10,000 times more frequency than Wi-fi.
2. Since Li-fi has a higher frequency, many people can use it simultaneously. But when the number of users on Wi-fi is high, the net becomes slow. So Li-Fi will be the best technology for network sharing.
3. Li-fi connects through room lights, so only you get that data when your room lights are on. No one outside the house can use the Li-fi you bought with your money. And no one will know that you are running Li-Fi. On the other hand, if you run wifi, it goes out through the wall and others connect if you know the password. As a result wifi speed decreases.
4. Since Li-fi runs on light, you can direct it towards you. As a result, there will be no signal loss and the speed of data exchange will increase. On the other hand, the Wi-Fi signal spreads around and causes a lot of loss. And you don’t get real speed either. So Li-Fi will be the latest benchmark of internet speed.
5. There are many places where radio or wireless signals are prohibited. There also you this technology
can use Because it doesn’t need wireless to use it. For example – A wireless signal or network is turned off in various factories. Because many times there is a danger of accident from the net signal. Again, the network is not available on the plane. So you can use LiFi even there if you want.
And the most interesting thing is that you can use Li-Fi even under deep clear water. Because we know that normal wireless signals don’t work underwater, but light signals do.
When you use Li-Fi, you will see many more benefits. Because using it gives a real idea about a thing. Let’s demystify some Li-Fi myths. Maybe you also believe in this rumor. Let’s put the rumors to rest.
6. Another big advantage of LiFi is that the use of solar allows LiFi connections to happen almost instantaneously because light travels at such a high speed. This leads to faster transmission of knowledge and faster internet connections – about 100 times faster than speeds achievable by WiFi.
Misconceptions about Lifi:
1. Many of us know that LiFi will be 100 times faster than WiFi. But to me, it seems like a rumor. Because of the wi-fi we use, the latest technology can provide speeds up to 700 GBPS. Such speeds have not yet been found in LiFe’s experiments. So LiFi will never be 100 times faster than Wi-Fi. Maybe through research, it can be 2x faster shortly.
2. Movies or large files will download in 1/2 second on li-fi, it’s not that realistic. because We currently hear about 700 Gbps internet speed of wifi. But service providers doubt whether we can get a maximum of 100 Mbps from our line. And Li-Fi how do you expect so much speed? Maybe this speed will be officially applied for some big work.
Where is Li-Fi technology used?
Li-Fi technology is widely used in various applications such as healthcare, education, retail, aviation, exhibition industry, etc. . Healthcare is one of the primary application areas within the global Li-Fi market. Hospitals have always received technology in the form of wired connections.
Mar 6, 2019. Indonesia is among the first countries to power LiFi in a primary education center. Eindhoven, The Netherlands – Global lighting leader Signify (Euronext: LIGHT) has announced that it is working with around 30 customers in Europe, North America, and Asia to launch its commercial LiFi system.
Is Li-Fi technology harmful?
In contrast, LiFi transmits data through light waves in the spectrum, so is completely free from harmful radio-frequency radiations. Similarly, LiFi technology is often used in environments where WiFi is considered a threat.
Can LiFi be hacked?
Li-Fi uses visible light. … Li-Fi works on existing protocols and unlike Wi-Fi does not require routers or hotspots. It can transmit data at much higher speeds than conventional Wi-Fi systems. Furthermore, since light cannot pass through walls, it is thought that Li-Fi signals cannot be easily hacked.
Can LiFi replace WiFi?
In line with WirelessSquare, Leaf-E, the use of solar energy to provide a wireless Internet connection, could become the most common source of communication in buildings within the next 10 years. Basically, it will be a game-changer, using LED lights to create WiFi.
What is the cost of LiFi?
The lamp costs around $841 and comes with a dongle. Only a single person can use the lamp at a time (multiple user support is due later this year), so you can’t buy extra dongles.
When will Li-Fi technology come?
Already, various big IT organizations have started working using LiFi. Also to use Li-Fi you need to buy Li-Fi supported mobile. Renowned mobile manufacturing companies are working towards making mobiles Li-Fi supported.
As some companies continue to work with Li-Fi technology, it is assumed that LiFi will be used in 2022. No word on pricing.
Last word: You don’t have to worry about Li-fi. Because our phone is not Li-Fi supported. If anyone buys a Li-Fi-supported phone, then come and tell the speed in the comment box, Inshallah.
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