What is Li-Fi Technology?

Li-Fi (Light Fidelity) is a wireless optical network technology that uses LED lights to wirelessly communicate and transmit data between devices. Li-Fi technology is a light-based communication technology that aims to utilize light waves instead of radio signals to present data. In order to fully understand Li-Fi technology, it is important to understand how Wi-Fi technology provides internet and data to our devices.

Generally, Wi-Fi uses radio frequency to transmit data and signals are spread over a specific area by a data point. Li-Fi is the “Visible Light Communication” system. In other words, Li-Fi uses light in bulbs, as we all know, instead of radio frequencies to transmit data. It should be known that Li-Fi technology is much stronger and faster than Wi-Fi technology because it is easier to focus the signals transmitted using light compared to radio frequencies to a single area.


Rodoplu, an academician who has worked on this subject, if we look at his studies on internet systems via light called Li-Fi.
Rodoplu’s “life simulation” that provides uninterrupted communication over Li-Fi was published in the world-famous scientific journal IEEE Access. Rhodope, Li-Fi means communication through light. The advantage of this is that it provides data transmission about a thousand times faster than Wi-Fi. However, the disadvantage is; Video transmission is interrupted when you enter between the LED and the computer. At this point, the video you watch on your computer or the video-conference meeting you are in will not be interrupted by transferring the connection to Wi-Fi and returning it to Li-Fi just in time, using the signal from other LEDs if necessary. However, on top of what Wi-Fi can provide, everyone states that they can use Li-Fi networks with uninterrupted higher image quality, as data can be sent much faster.

What Is Li-Fi Working Logic?

In Li-Fi technology, LED bulbs are used to send data over light. Data transmission is realized by changing the intensity of the rays emitted from LED bulbs with Li-Fi. In Li-Fi technology, the internet is transmitted to users via light thanks to special transmitters attached to LED bulbs.


Can Li-Fi Technology Replace Wi-Fi Technology?

Delivering wireless internet using light instead of radio frequencies; It will provide convenience in environments where Wi-Fi technology cannot be easily used such as aircraft cabins, hospitals, and dangerous environments. Light is used in fiber optic cables for fast point-to-point data transmission.

Li-Fi technology has a 10,000 times wider spectrum for wireless communication, which can significantly reduce the load on the existing Wi-Fi network. This provides us with a longer life and reliable network environment of Li-Fi technology.

What are the Application Areas of Li-Fi?

Li-Fi applications are unlimited and still, the field of research is not fully determined. Basically, Li-Fi can provide internet access wherever there is an LED light.

Wi-Fi technology is not preferred or cannot be used due to current technical conditions; It is predicted that the use of Li-Fi technology will be more comfortable in villages, towns and rural areas, hospitals, airplanes, and military areas.

So Is Li-Fi Safe?

Since data transmission in Li-Fi technology is by light. So the light source is turned off or the light wall etc. When interrupted by an obstruction, data transmission is also interrupted. This ensures that the connection remains within a certain area and the information flow becomes secure.

With Li-Fi technology, the lamp in your home or office will protect you from situations such as password theft outside, as it will ensure that the internet remains only within these limits. At the same time, it is important for the security of data that disconnections will not be experienced in Li-Fi technology, as in Wi-Fi technology.

A short video below explains how Li-Fi technology is.

I hope it has been a useful article.