What is Li-Fi?

Li-Fi is new wireless communication mode it utilizes light to transmit data and position between devices.

How Li-Fi technology came into being?

The term Li-Fi was pioneered in 2011 by the German physicist Harald Haas of the University of Edinburgh. The professor exemplified how the LED lamp, fitted with signal processing equipment, was capable of transmitting high-definition video to a computer. The hypothesis was then successfully tested at Fudan University in Shanghai and then developed in recent years by start-ups and major brands.

How Li-Fi works?

The Li-Fi activated system transforms the light beam into an electrical signal. The bulbs which fully bypass radio frequencies function as wireless routers.

What speed Li-Fi offer?

Up to 220 Gbps per hundred users connected at the same time. In addition to speed, the benefits of Li-Fi relative to more conventional Wi-Fi are many like a wider supply of free frequencies, addressing interruptions, and above all, greater availability of access points. Just an LED light bulb to get a hot spot.

How Li-Fi emitting bulb works?

The Li-Fi bulbs are fitted with a chip that transmits the light in an invisible form for the optical data transfer to the terminal of the customer, which must be equipped with a photodetector, i.e. a photodiode that turns the brightness variations of the Led into electrical signals. If properly configured, Li-Fi networks can reach transmitting speeds up to 100 times higher than conventional Wi-Fi.

Is Li-Fi Secure?

Li-Fi technology is commonly considered to be more reliable than Wi-Fi. Equipped with many protection features embedded in Li-Fi systems to make them more reliable. Although these features will arrive in the near future when Li-Fi is in large circulation.

Shaded coverage

Li-Fi links contact only takes place in areas that can be touched by light. In wide open spaces, each light may be directed to certain areas within specific spaces in order to create various network zones – each light corresponds to a specific network. This makes it possible for certain networks to limit access from certain agencies to individuals.

No data leakage

Since visible light is limited and easily contained within opaque walls, more stable connections can be made as easy as shutting down blinds and windows – effectively limiting light. Since visible light can not pass through walls, contact is highly localized to areas that are limited to opaque walls. This ensures that those wishing to connect to the network need to be physically in the room to access the network, ensuring external access to the network.


By Qamar Kazmi

Qamar Kazmi is a content writer who previously has worked in numerous semi-government and private sector organizations as a business development resource. He is focused on the subjects not usually covered in conventional news and discussions. He is specialized in explaining events from his own perspective and point of view.

One thought on “Li-Fi Internet through light”

Leave a Reply

Your email address will not be published. Required fields are marked *