How are light waves used in communication?

Light waves are utilized in communication primarily through fiber optic technology, where they transmit data as pulses of light through glass or plastic fibers. This method allows for high-speed data transfer over long distances with minimal loss and interference. Additionally, light waves are used in technologies like Li-Fi, which leverages visible light for wireless communication, providing an alternative to traditional radio-frequency methods. Overall, light wave communication enhances bandwidth and speed, making it essential for modern telecommunications.