Armored fiber optic cables are specialized cables featuring enhanced protective layers or metal sheaths. They exhibit excellent environmental adaptability, resisting vibration, extreme temperatures, and. -tube Light Armored Optical Cable (GYXTW) Description GYXTW is a kind of outdoor cable for telecommunication use. Providing high-fiber-counts in a rugged, compact design, the enhanced coupling features ensure the ribbon stack and cable act. Higher bandwidth optical fibers in robust, space-saving constructions for next-gen systems, transmitting instant data and video at maximum capacity. Designed with an all-dielectric structure, these cables are non-conductive and entirely immune to lightning strikes and electromagnetic. FireTuf fibre optic cables are manufactured by Prysmian Draka.