LiFi Technology

LiFi Technology: LiFi stands for light fidelity. LiFi is a wireless conversation technology that makes use of light to transmit information and position between devices. The term was first brought by means of Harald Haas during 2011.

What is LiFi Technology?

LiFi is a wireless optical networking technology. Specifically, it is a structure of visible light communications (VLC) system that makes use of light-emitting diodes (LED) for information transmission. Also read:-Which is the nearest black hole? and what is black hole

LiFi is similar to WiFi, LiFi is the only structure of VLC that permits the bidirectional transmission of light. However, as an alternative of the radio spectrum, it makes use of the visible light spectrum via LED lightbulbs equipped with a special chip to transmit an internet signal through light waves.


LiFi is a light conversation device that is capable of transmitting information at excessive speeds over the visible light, ultraviolet, and infrared spectrum. In its current state, only LED lamps can be used for the transmission of visible light.

How LiFi works?

LiFi is a Visible Light Communications device transmitting wireless internet communications at very excessive speeds. The science makes a LED light bulb emit pulses of light that are undetectable to the human eye and within these emitted pulses, information can travel to and from receivers. Then, the receivers collect data and interpret the transmitted data. This is conceptually comparable to decoding Morse code however at a much faster rate – millions of times a second. Laboratory exams have proven theoretical speeds of 400 Gigabit per second (Gbps), which means a high-definition movie may want to be downloaded within seconds, which means 100 times faster than WiFi.

History of LiFi Technology

Harald Haas, Chair of Mobile Communications at the University of Edinburgh is viewed to be the founder of the LiFi technology. He coined the term LiFi which stands for light fidelity when he promoted this technology in his 2011 TED Global talk and helped begin an organization to market it. According to this TED talk, light fidelity can be utilized in site visitors management systems the usage of a car’s headlights or in chemical manufacturing plants the place radio frequency(RF) is too dangerous and could cause antenna sparks. LiFi will bring internet access in locations that RF’s can’t reach!

Harald Haas co-founded pureLiFi, formerly pureVLC is an equipment producer company set up to commercialize LiFi products for integration with existing LED-lighting systems.

In September 2013, the organization launched the world’s first commercially available LiFi technology. The Li-1st marked the introduction of wireless communication technology and became the world’s first LiFi technology available on the market. Li-Flame which was launched in February 2015, claimed to be the first LiFi product that allowed for mobile wireless communications. After a year, pureLiFi and Lucibel, French lighting company, introduced the world’s first industrialized LiFi solutions, it has been deployed in multiple places including Microsoft’s Paris HQ.

Advantages of LiFi Technology

1.SpeedLiFi technology is able to transmit data much than WiFi, about 2.24 gigabits per second.

2.VersatilityLiFi is easily integrated into areas that already use LED lighting systems.
The internet is readily-accessible anywhere there is light and can be used in a range of functions that require an internet connection.

3.CostLED lamps are less expensive to produce, analysts predict that the deployment of LiFi would be simpler and ten times cheaper than WiFi.

4.AvailabilityLED light bulbs are becoming a staple in all places – in homes, offices, businesses, and even transportation. This means quickly enough, high-speed internet connectivity.

5.SecurityVisible light is unable to permeate opaque surfaces. Signals emitted by LiFi as well as the information transmitted through it remain restricted within the space.

Dis-advantages of LiFi Technology

1.LimitationsLiFi offers a limited range.

2.InterferenceLED lamps must continue to be on to function, they can further make contributions to light pollution, especially if set at greater brightness ranges to compensate for possible interference.

3.InfrastructureDeploying LiFi systems are cheaper because they only make use of LED lamps. In reality, the installation of LiFi systems can become costly due to the lack of infrastructure.

Working nature of LiFi Technology(video)

Complete ppt on LiFi Technology

Lifi ppt from rr140688

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