Fiber-optic cables transmit data using which method?

Fiber-optic cables transmit data using light guided through glass tubes. This technology relies on the principle of total internal reflection, which allows light signals to travel through the fiber without significant loss of strength over long distances. The core of a fiber-optic cable is made of glass or plastic, and when light is sent into the cable, it reflects off the walls of the core and continues to propagate along the length of the cable.

This method of data transmission is advantageous due to its high bandwidth capabilities and resistance to electromagnetic interference, making fiber-optic cables an ideal choice for high-speed telecommunications and data networks. By utilizing light instead of electrical signals, fiber optics can transmit data over much greater distances without degradation, making it essential for modern communications infrastructure.