A 4 strand burial fiber optic cable consists of four individual optical fibers encased within a protective sheath engineered for direct burial in soil. Unlike aerial or indoor cables, burial-grade cables must endure moisture, temperature fluctuations, mechanical stress, and. These are the outdoor fiber optic cables you see strung along telephone poles (aerial), installed inside an underground duct, or even buried directly below ground. Already Know What You Are Looking For? Already have your cable in mind? Visit all our outdoor cables here. Ribbon cables offer higher fiber counts and greater fiber density. Rugged Outdoor Durability---- The Industrial TPU Jacket features strong tensile strength, high abrasion resistance, waterproof, high and low-temperature, UV-resistant, and bending resistance. Suitable for Various Harsh Installation Environments such as roads & snowfields & industrial fields &. Our Corning Altos ® Outdoor Armored Direct Burial (OSPDB) Pre-Terminated Fiber Optic Cable Assemblies are rated for almost all outdoor applications. Designed specifically to withstand harsh environmental conditions, this type of cable plays a crucial role in connecting.