Li-Fi Technology


        Technology is one field which is always under the test of innovation and advancement. We remember sending letters and postcards to communicate, on occasions, on birthdays. We used to wait for vacations to visit friends and relatives to meet and see them. But with innovations came internet through LAN, WAN and MAN. It brought a wave of new gadgets, new technology. With time, communication was made easier and on finger tips. Introduction of WLAN (WI-Fi- term for a high-frequency WLAN) was rapidly accepted and made communication available on the move. But with introduction of an advanced version of technology, the users for it increase, which makes it slower gradually. Even the use of wi-fi has faced the problem of congestion and people look forward for a new innovation for greater benefit.

        The field of communication undergoes a constant change and innovation. Communication is majorly affected by the connectivity and people want faster and reliable connection to get in touch with people sitting miles away from them.

        Till now all the signals were through radio waves, but what if other waves could be used to surf the internet? LiFi technology is the new technology that transmits signals as light instead of radio waves. In urban areas where wifi networks become congested and there is a lot of noise in the signals, this technology is something that can be of immense use to an individual.


The basic requirement of this technology is the availability of light !




Working of Li-Fi Technology

        Light, even though being an electromagnetic wave like radio waves, can transmit data ten thousand times faster. This technology uses an LED light bulb to generate signals by flickering it on and off. The technology focuses on making sure that the light bulb is flickered up to billions of times a second which makes it unnoticeable to human eyes. This flickering generates almost ten thousand times the speed of an average Wi-Fi. This technology is thus named Li-Fi, which is a VLC, visible light communication, technology developed by a team of scientists including Dr Gordon Povey, Prof. Harald Haas and Dr Mostafa Afgani at the University of Edinburgh. In simple terms, Li-Fi can be thought of as a light-based Wi-Fi.

Li-Fi has its own set of advantages:
1. Light is used everywhere and can be used even at the places where radio frequency communication is a problem, such as aircrafts or hospitals.
2. It is focused in providing connectivity at very high speeds as compared to normal Wi-Fi speed.
3. It solves the problem of additional cables and wires that needs to be laid from one access point to another.
4. Li-Fi could be used to beam the information directly to the destination.




        Even if a technology provides such benefits, it also gets accompanied by some disadvantages. The problem faced by Li-Fi is that it cannot penetrate the walls. So it needs light present on the other side of the wall. When beam is used to transfer information, it gets exposed to the weather conditions and gets obstructed in heavy fog or snow.

        But the benefits and especially the speed outweighs any other disadvantage tied to this technology. But as discussed, any technology stays in demand as long as another better version comes in the market. And this field experiences a constant innovation and modification. So in the coming years, be prepared to experience astonishing technologies that may even let you teleport yourself…



About Author

Hi! I’m Chaitali Datta, an MBA in Finance and currently working with Apex Group of Colleges. Till now I could bag only two publications, and writing few for future publishing.

• Book review on "Challenges of Indian Management", by B.R.Virmani, Volume 21, Issue No. 2, South Asian Journal, Pg.167-170, dated Apr- Jun 2014
• Book review on "Who Will Bell the Cat", by Moid Siddiqui, Volume 22, Issue No. 1, South Asian Journal, dated Jan - Mar 2015

Email :- chaitali.datta.official@gmail.com