Fiber-optic technology uses thin strands of glass or plastic, called fiber optics, to transmit data as light signals. This method allows for high-speed communication over long distances with minimal loss of signal quality. The light travels through the fibers by bouncing off the walls, a process known as total internal reflection. This technology is widely used in various applications, including internet connections, telecommunications, and medical instruments. Because fiber optics can carry more data than traditional copper wires, they are essential for modern communication systems, enabling faster and more reliable connections for users around the world.