A fiber-optic cable, also known as an optical-fiber cable, is an assembly containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with PE, PVC, or LSZH layers and contained in a protective tube suitable for the environment where the cable is used. Different types of cable are used for different applications, for example, indoor or outdoor and singlemode or multimode, providing a high-speed data connection between different parts of the network infrastructure.