The technology used to transmit data over fiber optic cables is light. Fiber optics employ strands of glass or plastic to carry data as pulses of light, allowing for high-speed data transmission over long distances with minimal loss. This technology offers significant advantages over traditional copper cables, including greater bandwidth and immunity to electrical interference. The use of light enables fiber optic cables to achieve faster speeds and higher data capacities, making them ideal for modern communication networks, such as the internet, telecommunications, and data center connections.