An Armored Fiber Optic Cable is a specialized type of optical cable that incorporates a protective armor layer—usually made of steel tape, steel wire, or aluminum—beneath the outer jacket. This armor provides enhanced mechanical protection against crushing, rodent bites, tensile stress, and. Armored fiber optic cable is a type of fiber optic cable with a metal or plastic armored outer jacket. It is appropriate for harsher environments, such as outside or high-traffic areas.