Li-Fi: Light Fidelity Technology-A Review

Abstract: 21st century has witnessed many technological innovations which have redefined the way we communicate with each other and this pace of technological innovation is increasing with each passing day Li-Fi stands for light fidelity this technology was first proposed by a German physicist Prof. Herald Haas it is a data transmission technique which utilizes light or illumination as a medium of communication Herald Haas proposed this technology which he calls “data through illumination” taking the fibre out of fibre optic by sending data through an LED bulb that varies in intensity faster than the human eye can follow it transmits data using the spectrum of visible light Haas coined term D- light for his invention which he claims can produce data rates faster than 10 Mbps this paper will explore this new technology its genesis, advantages, limitations and future scope.

Keywords: Li-Fi, D-light, data transmission, LED.