What is Li-Fi: the future of wireless networks

Li-Fi and optical network

Li-Fi is a technology based on optical data transmission, in which light is used for communication. Unlike Wi-Fi, which uses radio waves, Li-Fi uses light waves or infrared radiation to transmit data. This is made possible by the rapid switching on and off of light-emitting diodes (LEDs), which is invisible to the human eye, but cannot be accepted and interpreted by specially sharpened ones.

Internet of light waves: how it works

The principle of high-speed Internet using Li-Fi is very simple. Light from a source (example, LED) is modulated to transmit data, which is then used and demodulated by a photodetector on the receiver side. This information will be read by Danny, whom we, by the way, interpret very well. The process is carried out at an incredible speed, while transmitting impressive amounts of information.

Visible light technology and light guides

Visible Light Communication (VLC) technology is a component of Li-Fi technology. With this technology, LED lamps

However, the question arises: how can light travel from a source to a receiver? The answer in light guides is the transparent structures that are used to guide light from one point to another. Light guides already use fiber optic communication and play an important role in the Li-Fi infrastructure.

History of Li-Fi

Start of the journey: theoretical foundations

The concept of wireless communication using light waves has been around for a long time. Recorded systems using visible or infrared light for communication have been developed. This is 20-20 days. It was in 2011 that Professor Harald Haas of the University of Edinburgh introduced the term “Li-Fi” to the world in his and famous TED Talk.

Haas demonstrated how the light from a single LED bulb can have faster and more secure internet with a traditional Wi-Fi connection. Together with co-authors, he created a company called “pureLiFi”, which specializes in the latest technologies and equipment for Li-Fi.

Progress and a new record

These impulses have achieved many breakthroughs in the development of Li-Fi. In 2013, a Chinese team observed a light link that could transmit data. It is 150 Mbps. In 2015, pureLiFi launched its first commercial product, the LiFi-X, a portable USB adapter for connecting to Li-Fi networks.

In 2020, a tall one from University College London set a new speed record for Li-Fi, reaching 224Gbps. That’s enough to download 18 movies at 1.5 GB per second!

Future Li-Fi

Today, Li-Fi continues to proliferate in many areas of our lives. Pilot projects have already emerged to offer Li-Fi for the public Internet in cities, in business, and even in aviation. While the need for technical and infrastructure facilities is emerging, the prospects for Li-Fi seem promising.

Benefits of Li-Fi over Wi-Fi

Li-Fi has a number of advantages over using Wi-Fi. One of the most serious assumptions is the high probability of a high data transfer rate. Li-Fi transfer speeds can reach up to 224 Gbps, which is much faster than the maximum Wi-Fi speed.

This is impossible, because Li-Fi is mobile, available in the provinces, not radio compatible, or, for example, in hospitals or on board aircraft.

Limitations of Li-Fi technology

Despite all the advantages, Li-Fi has some advantages. Light waves cannot penetrate walls or other labs, limiting their use in some scenarios. Also, new infrastructure is needed to support this technology.

Li-Fi predicts its potentially revolutionary technology, making it impossible to call wireless networks. So I’m right, I’m going to go look for the light, remember, this is what I will tell my fellows to read you not only with lighting, but also with an Internet connection. Li-Fi mobile status is one of the most technologically proven let.