Li-Fi, Light Fidelity is a wireless networking technology that uses visible light from LED’s to transmit data. It uses the light that is visible to the human eye. Li-Fi works by flickering the light at a faster rate that may be invisible to the human eye.Li-Fi technology is same as Wi-Fi but it uses different medium to transfer the data, i.e Wifi uses RF(Radio Frequency) spectrum and Lifi uses the visible light spectrum as it is also said that Li-Fi can transmit 100 times faster than Wifi. Theoretically it is believed that an individual can download upto 18 movies in one second.
See how fast is it ?. Downloading 18 movies in one second tell us that the data transfer rate in this technology is very much high when compared to the present day Wifi technology.As we know that online streaming of videos has become a norm now a days,such blazing data transfer is much needed. A high data transfer between the clients and servers may make this technology move forward in its practices and also adds an additional interest towards it.
What is Li-Fi and how does it work ?…
It is a visible light communication(VLC) technology which uses light form LED’s(Light emitting diode) to transfer data at high speeds. In offices and industrial conditions it is observed that it can transfer the data with a speed of 1 Gbps . Under laboratory conditions it is observed that the transfer rate is very high and achieved a speed of 224 Gbps.This uses an infrared LED to create a low speed data stream. In Li-Fi devices, it expected to transmit thousands of data streams in parallel with higher speeds. Here, the technology is based on modulating the current to the LEDs which results the corresponding variations in the output.
This is done at very high speeds and thus is imterceptible to the human eye. These variations in the light are tracked with the help of a photo detector and converted it back to electric current.
The term Li-Fi was given by Professor Haas from the University of Edinburgh, a leading light (no pun intended) in the field. An Estonian technology company is manufacturing the products related to this technology, it ensures that by the third quarter of the next year(2016) a few products should be available.
Will Li-Fi replace the existing Wi-Fi…
If people consider to have a high speed internet in their rooms then the wi-fi technology would be relpaced with its sucessor. Since Li- Fi is based on the light it cannot be used outboors of your homes, it is fixed to a particular.Li-Fi should be used in a place where high speed internet is a required to continue with their.The home environment may not be replaced with this current technology since we use internet for simpler purposes in our houses.
Li-Fi technology must be initiated in the research labs and colleges in order to gather bundles of information to continue with their projects.
For more information regarding the Li-Fi technology you can study here.