Corrugated steel armor helps protect direct burial fiber optic cables from crushing forces, impacts, and pulling stress during installation and while underground. It also supports use in rugged outdoor environments, while the polyethylene jacket helps shield the cable from moisture and ultraviolet exposure.

The appropriate fiber strand count depends on the number of connections and how much room the installation needs for future expansion. Two-strand direct burial fiber optic cable can suit a basic link, while six-strand cable provides additional fibers for multiple links, redundancy, or planned system growth.

Review local burial codes, the planned trench route and depth, soil conditions, drainage, and separation from utilities before installing direct burial fiber optic cables. Select a cable with a polyethylene, UV-resistant jacket and protective features such as corrugated steel armor, then confirm that the fiber type, connectors, bend radius, and termination components match the system.

Direct burial fiber optic cables transmit data as light, helping carry signals over long distances while avoiding electromagnetic interference (EMI) and radio frequency interference (RFI) that can affect copper wiring. Their outdoor-rated jacket and corrugated steel armor support installation in exposed areas by helping protect the fiber from moisture, crushing, and other physical stresses.