Optical fiber technology uses thin strands of glass or plastic, known as optical fibers, to transmit data as light signals. This method allows for high-speed communication over long distances with minimal loss of signal quality. Optical fibers are widely used in telecommunications, internet connections, and cable television. The core of an optical fiber is surrounded by a layer called the cladding, which reflects light back into the core, ensuring that the signal travels efficiently. This technology is preferred for its ability to carry large amounts of data quickly and securely, making it essential for modern communication networks.