LiFi, short for Light Fidelity, relies on visible light to transmit data. Sunlight is a form of visible light, so you might think it would interfere with LiFi. However, LiFi systems are designed to work with specific wavelengths of light that are different from those found in sunlight.
Here's why:
- LiFi uses modulated light: LiFi transmits data by rapidly switching the intensity of light on and off, creating a pattern that represents data bits. This modulation happens at very high speeds, far beyond the human eye's ability to perceive.
- Sunlight has a broad spectrum: Sunlight contains a wide range of wavelengths, including those used by LiFi. However, LiFi receivers are specifically tuned to detect the modulated light from LiFi transmitters, ignoring the other wavelengths in sunlight.
- LiFi systems use filters: Some LiFi systems use filters to block out specific wavelengths of light, further reducing the impact of sunlight.
Therefore, LiFi can work in sunlight because it is designed to differentiate between the modulated light it uses for data transmission and the ambient light from the sun.
