A fiber-optic cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable but containing one or more optical fibers that are used to carry light. These cables are used mainly for digital audio connections between devices. Unlike copper wires, which are limited by lower data transmission speeds, shorter transmission distances, and higher susceptibility to electromagnetic interference, fiber optic cables offer unparalleled performance and can. An optical fiber cable (or fiber-optic cable) is a flexible cable which contains one or multiple optical fibers. The first consideration in choosing a fiber optic cable is the environment that you will be using it in.