Li-Fi: The Unpopular Wireless Revolution

Since the beginning of the Internet, connections have not stopped improving, driven by ever-increasing demand. The world is hungry for more data, more connection, more intelligence, more information and more speed. Current technologies have their limits, and therefore new solutions are knocking strongly at the door from time to time.

Today, we live in a Wi-Fi (Wireless Fidelity) world. Mobile phones and many other devices use today’s wireless networks to provide all kinds of services over the Internet, but as effective as that technology is, it also has its limitations.

Now, let’s imagine a world where light sources can connect you to the internet. Sounds like a world of science fiction but the technology already exists. It is called Li-Fi and it is the future of wireless connectivity!

Li-Fi (Light Fidelity) technology is one of the options proposed as a new form of data transmission. But what is it?

What is Li-Fi Technology?

The term Li-Fi was first used in 2011 by Engineer Harald Haas during a TED conference. Li-Fi is a light communication system that is capable of transmitting data at high speeds over visible light, ultraviolet, and infrared spectrums.

Li-Fi is not the replacement of Wi-Fi technology. It can be considered as an incredible ‘companion’ of Wi-Fi. It operates between 380 nanometers (nm) to 780 nanometers (nm) optical range. It is used to exchange data rapidly and securely at a much lower power level compared to Wi-Fi.

Advantages of Li-Fi

Aside from saving the world from insufficient wireless frequencies, Li-Fi also comes with other benefits. Here are its significant benefits:

* Security: Light is stopped by opaque objects making Li-Fi significantly more secure than other wireless technologies, hence, you won’t have to worry about leaking your connection to public spaces potentially giving other people access to your network.

* Speed: With Li-Fi technology, your light bulb is essentially your router. It uses common household LED light bulbs to enable data transfer, which allows for extremely high speeds. The Li-Fi connection can transmit data at a rate of 224 GB per second. At this speed, a high-definition video can be downloaded in seconds!

* Availability: Light is present everywhere, meaning that high-speed data transmission could be available wherever we go. Soon, when the technology is readily available to the general public, street lights, building lights, and transportation lighting can all communicate wirelessly and you can access the internet wherever you may be.

* Efficiency: Li-Fi holds the potential to be more energy-efficient and cheaper due to the nature of LED bulbs which are already efficient on their own. Li-Fi technology gives them another purpose, connectivity. This will save costs in homes and workplaces because it could do without electronic devices such as routers, modems, signal repeaters, wave amplifiers, and antennas.




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