Li-Fi stands for Light Fidelity. It is a communication system powered by visible light. Common light emitting diodes or LED lamps are used to transfer data at incredible speeds when compared to the conventional methods of data transfer that we use today. Details of the pioneering light-driven communication technology, in which light waves are used in place of radio technology to deliver data, was first discovered by a professor of the University of Edinburgh, Harald Hass in 2011. He believed that light bulbs can be tuned to act as wireless routers after appropriate tweaking.
Transfers Data At Lightning Speed Seamlessly
Li-Fi is similar to Wi-Fi, except that LED light is used to communicate data wirelessly through the lighting medium. It is also a super fast alternative to the conventional Wi-Fi as it has the capability of sending data at up to 1GBps as some real world tests have effectively proven. This makes Li-Fi 100 times faster than the currently available technologies. By using Li-Fi, it would be possible to download hi-definition films within just seconds. There are other crucial benefits of the technology apart from the amazing speed. It offers resistance to interference and is a highly secure medium of data transfer too.
How It Works
According to the numerous experiments and the ongoing research being done in this field, the idea of using LED lamps to exchange data can become a reality in the near future. A USB sized device acts as a wireless modem to receive data from these lights. The device can be plugged into the user’s computer or tablet. A sensor built in the system catches the light while an infrared component sends a signal back. By installing a networking component in the overhead lights, multiple users can connect to a single light source. They can all move from one light source to another seamlessly without any loss of signal or connection.
Fully Secure And Highly Efficient
An LED light source with a 60 degree field of view can provide a coverage area of around 10 square meters. The edge of the light area can reduce the speed of receiving data marginally. However, light that bounces off objects can easily deliver a signal though it will be slower than the ones you are receiving from the main beam of source of light.
With Li-Fi, you can easily transfer more data in a localized area and in a highly secured manner. Also, if there are more Li-Fi enabled LED lights in an area, the total capacity can be higher. As light does not penetrate or go through walls which makes the creation of highly secure networks a possibility with Li-Fi.
The constant stream of light produced by LED lights can be dimmed or brightened at rapid rates. This feature of LED lights is harnessed by Li-Fi system. It keeps changing the light levels to send signals to a photosensitive device. These rapid fluctuations are undetectable to the human eye, but they can be decoded by the device and sent back to a Li-Fi capable LED lamp. This process gets repeated to create an incredibly fast and seamless connection to the web.
Morale Booster For LED Manufacturers
The LED industry can get a major boost by this development. Right now, the LED industry is challenged with the long lifecycle of LED bulbs which decreases the frequency of purchases. There is a growth issue as the industry is surviving solely on new purchases and not on repeat buys. Li-Fi can give the industry a new lease of life; a new market opportunity that may have a dramatic effect in the future as the technology is developed. The use of LED lights as a device for other high-value, high-demand services is clearly a paradigm shift that can create enormous value for the LED industry.