What is LiFi and How does it works ?

Introduction

LiFi, short for Light Fidelity, is a wireless communication technology that uses visible light to transmit data. LiFi works by using light emitting diodes (LEDs) to send binary signals to a receiver, such as a computer or mobile device, which then converts the signals into usable data.
LiFi technology is based on the concept of using the visible spectrum of light to transmit data. The visible spectrum is a portion of the electromagnetic spectrum that is visible to the human eye, and ranges from about 400 to 700 nanometers in wavelength. This portion of the spectrum is typically used for illumination, but LiFi technology takes advantage of the fact that LEDs can be rapidly switched on and off to create a binary code that can be used to transmit data.
One of the advantages of LiFi technology is that it offers faster data transfer rates than traditional Wi-Fi, with potential speeds of up to 224 gigabits per second. LiFi technology is also more secure than Wi-Fi, as light cannot pass through walls, which makes it more difficult for hackers to intercept data.
However, one of the drawbacks of LiFi technology is that it requires a direct line of sight between the transmitter and receiver, which limits its range and makes it less practical for certain applications. Additionally, LiFi technology cannot be used outdoors during daylight hours, as the interference from natural sunlight would disrupt the signal.

How does Li Fi work?

Li Fi is a high speed, bidirectional, and fully networked wireless communication of data using light. Li-Fi constitutes of several light bulbs that form a wireless network.
When an electrical current goes through to a LED light bulb, a stream of light (photons) emits from the lamp. LED bulbs are semiconductor devices, which means that the brightness of the light flowing through them can change at extremely high speeds. The signal is sent by modulating the light at different rates. The signal can then be received by a detector that interprets the changes in light intensity (the signal) as data. Also when the LED is ON, you transmit a digital 1, and when it is OFF, you transmit a 0.