Light Emitting Diodes have replaced traditional Incandescent and even CFL bulbs. But the day is not far away when LED bulbs might also replace your Wi-Fi router. We all know that LEDs have potential to transmit information digitally while preserving the quality of lighting intact simultaneously.
University of Edinburgh’s researchers came to know that it is possible to send information without facing issues like dim light, change in colour or high energy consumption due to heat. These were the main concerns which were holding back companies to make Light Fidelity or Li-Fi commercial. Since, light quality has a major impact on the mental and physical well-being of people, this development is a big breakthrough in this field.
Every year, millions of people are connecting to the Internet. This global thirst for the Internet needs to be satisfied, and this research is another step in that area.
LEDs are witnessing rise in their adoption as they are being used in T.V and other displays to a large degree.
Scientists knew that it was possible to transmit information to and from devices like smartphones, tabs, and computers, but keeping the quality of light was the main hurdle in further development.
Method That Researchers Used
Researcher worked on LEDs that produced “cool white” and “warm white” light. They focused on LEDs that were being switched on and off very rapidly that can’t be noticed or perceived by human eyes. This technique did not reduce LEDs’ brightness while preserving the life expectancy intact at the same time.
This on-off technique increase temperature of bulbs slightly that can be neglected. Increase in temperature due to heat means that the bulb will consume more energy and thus it will become less eco-friendly.
This research will prove to be very useful down the line as more people would be able to realise the dream of wireless communication.
Over the next few years, it is highly likely that LED manufacturers will join hands with researchers and incorporate features of wireless data transmission into LEDs light. The LED bulb industry will compete in upcoming years on the basis of data transmission capabilities.
What is Li-Fi technology?
Li-Fi that stands for Light Fidelity transmits data using visible lights that comes from LED bulbs. Currently, microwaves transfer data that comes out of your router. Scientists in China have said that this new data transfer technology will come to people’s home in next six to seven years.
Research in China also showed that Li-Fi can provide speed up to 50GBps. Research teams in different countries like Russia, China, UK, Mexico, and US are working on this subject and finding the way to harness the power of LED bulbs and the light coming out of them.
The data is transferred by harmless infrared rays and it is being touted to be more secure and stable. This would dramatically change the home Wi-Fi that we use now. The term Li-Fi was coined in 2011 during the TED talk show.
To transfer information, antennas will be needed. These antennas can be placed on a ceiling. Multiple devices can be added to a single antenna without causing congestion which is one of the major reasons of slow Wi-Fi speed in the existing Wi-Fi technology.