A telecommunications cable in which one or more optical fibers are used as the propagation medium. Note 1: The optical fibers are surrounded by buffers, strength members, and jackets for protection, stiffness, and strength. Note 2: A fiber-optic cable may be an all-fiber cable, or contain both optical fibers and metallic conductors. One possible use for the metallic conductors is the transmission of electric power for repeaters. Synonyms optical cable, optical fiber cable.