What is Li-Fi technology and how it works

On this page, We are going to learn about the full form of Li-Fi and the meaning of Li-Fi, As well as the meaning, definition, abbreviation, and acronym for Li-Fi in different categories. So you should read this post till the end.

The Full Form of Li-Fi: Light Fidelity

Li-Fi Stands for Light Fidelity. LiFi technology is a high-speed optical wireless technology. which transmits the data through Visible Lightwaves (light emitted from LED bulbs).

  • It is optical communication technology. In which Visible Light Communication emanating through LED lamps for data transfer
  • The range of these rays is 400-800 Thz.
  • Due to the transfer of data through light technology, so, the speed of transmitting the data is about 224 Gbps. Which is about 1000 times more than wifi.
  • This technology is not available everywhere else you can download massive data files within a few seconds by standing under an LED bulb.

In this article, we’ll cover the basics of Li-Fi technology and how it works. We’ll also take a look at some of the benefits of using Li-Fi over traditional Wi-Fi.

What Is Li-Fi?

Li-Fi is a wireless technology that uses light waves to transmit data. It’s similar to traditional Wi-Fi, but instead of using radio frequencies, it uses visible light from LED bulbs. This makes it a much safer option than Wi-Fi, as it doesn’t emit any harmful radiation.

You might have heard about Li-Fi, the new wireless technology that’s been making waves in the tech world. But what is it, exactly?

Li-Fi is a type of wireless communication that uses light instead of radio frequencies. And unlike traditional Wi-Fi, which can be blocked by walls and other obstacles, Li-Fi can pass through them because it uses visible light.

This makes Li-Fi a great option for crowded places like airports and hospitals, where there’s a lot of interference. It also has the potential to be a lot faster than Wi-Fi, since it can transmit data at speeds up to 10 Gbps.

Who is the inventor of Li-Fi

LiFi was invented by Prof. Harald Haas. This technology was introduced in the year 2011, and then the world became familiar with the name of Li-Fi. Prof. Harald Haas presented this new discovery in a program of Ted Global Talk and told, how data can be transmitted through light also.

How Does Li-Fi Work?

Li-Fi is a type of optical wireless communication that uses light to transmit data. And unlike traditional Wi-Fi, which uses radio waves, Li-Fi can be used in any environment, even close to electrical equipment.

How does it work? Well, basically a transmitter and receiver are set up in each room. The transmitter sends out a signal that causes the light to flicker on and off very quickly. This flickering light is then detected by the receiver, which converts it back into a digital signal.

It is not at all that only one LED lamp is needed in Li-Fi technology, along with it some major components are also required which are necessary for connection like –

  • streaming content server
  • Lamp Driver Kit
  • LED Lamp
  • Photo Detector Machine
  • Li-Fi dongle
What is Li-Fi Full Form And Meaning, Stands for & Definition
  • Any digital data is in the form of binary digits 0 or 1. Since WiFi works on the principle of data transmission from Radio Waves and WiFi can easily send and receive binary digits i.e. 0 or 1.
  • Similarly, Li-Fi transmits data in the form of 0 or 1 using Visible Light Rays. If the Light Lamp (LED) is used in this if the light is OFF then 0 and if the light is ON then 1 will count the binary data. And it works on the same principle.
  • The Internet Source is connected to the Lamp Driver and the Lamp Driver transmits the data coming from the Internet cables inside the Led Bulb.
  • The light that comes in is the LED bulb. it captures by a photodetector, and photodetector Stream the server content or data in the form of binary digits 0 or 1
  • Light signals are now converted to binary data by the Photo Detector. And then sends it to a computer or smartphone to be processed. It is then transformed into audio, video, and images. After that, we may look at the data in the app.

What Are the Benefits of Li-Fi?

So what are the benefits of Li-Fi? First and foremost, it’s incredibly fast. Data can be transferred at speeds of up to 1GB per second, which is 100 times faster than Wi-Fi.

Secondly, Li-Fi is incredibly secure. Because the signal is transmitted through LED lights, it’s impossible to hack into.

And finally, Li-Fi is environmentally friendly. LED bulbs use a fraction of the energy of traditional bulbs, so using Li-Fi won’t add to your carbon footprint.

How Is Li-Fi Different From Wi-Fi

The function of Li-Fi and WiFi is to transmit wireless signals. But, Light Fidelity technology is an advance as compared to Wi-Fi. let’s understand what is the feature, applications, and uses of Light Fidelity. and the difference between WIFI and LIFI.

BaseLight FidelityWireless Fidelity
Stands forLi-Fi stands for Light FidelityWi-Fi stands for Wireless Fidelity
OperationThe medium of Data is transmission through visible light rays.The medium of Data is transmission through Radio Waves.
ComponentsThe components of Li-Fi are- Lamp Driver, Led Photodetector, and Led BulbOnly Wireless Router is used in Wi-Fi technology
TechnologyPresent IrDA-compliant devices are usedWLAN 802.11a/b/g/n/ac/ad standard compliant devices
ApplicationsUsed for Internet Browsing in airlines undersea explorations hospitals operation theaters in offices and at homeInternet access through WiFi Hotspot
AdvantagesIt can be used in aircraft, hospitals, food, and nuclear power plants without any electromagnetic interference.Interference is high Does not work in salty seawater. Where Radio Waves cannot reach, they cannot be used.
PrivacyTransmission is secure. An external user cannot access your Internet.Transmission is not secure. An external user can access your Internet.
Data transfer speedLi-Fi provides up to 1 Gbps speed of data transferThe data transfer speed is up to 100-150+ Mbps.
Frequency of operation10 times the frequency of radio wavesIt has 2.4GHz 4.9GHz and 5GHz
Coverage distanceIts coverage distance is up to 10 meters. the transmission capacity is dependent on the Lighting area.Its coverage distance is up to 32 meters. the transmission capacity is dependent on the antenna.

What Are the Challenges of Implementing Li-Fi?

For a start, it’s not always easy to get everyone on board with new technology. There’s always going to be a certain amount of resistance to change, and with Li-Fi, that’s no different. Plus, there are the costs associated with installing the new technology, and sometimes these can be prohibitive.

Then there are the challenges of making sure that the system is actually working properly. With any new technology, there are going to be glitches and problems that need to be ironed out. And it can take time to do that.

But despite these challenges, Li-Fi is still proving to be an incredibly viable option for businesses and organizations all over the world. It’s just a matter of time before it becomes the standard for wireless communication.


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