Source: Financial Express
Context: The Defence Ministry has adopted Velmenni’s Li-Fi technology to tackle communication challenges in the Indian Navy.
Li-Fi, developed by Velmenni, uses light for secure wireless communication, supported by a grant under India’s iDEX initiative.
What is Li-Fi Technology?
LiFi (Light Fidelity) is a wireless communication technology using visible light, specifically LED bulbs, to transmit data. Invented by Professor Harald Haas in 2011, LiFi offers high-speed, bidirectional mobile communication similar to WiFi but with faster speeds, lower latency, and greater bandwidth (thousands of terahertz).
It operates by modulating LED light to encode binary data, which is then received and decoded by photodiodes to transmit data wirelessly via visible light communication. This makes LiFi ideal for electromagnetic-sensitive environments such as aircraft cabins, hospitals, and nuclear power plants, as it does not cause electromagnetic interference and utilizes unused visible light frequencies for communication.
