Installation costs can add significantly to these numbers, with estimates ranging from $10,000 to $30,000 per kilometer, depending on the complexity of the terrain and installation method. Procuring large quantities of fiber optic cable can reduce the per-kilometer cost due to. Fiber-optic cable materials typically cost $1 to $6 per linear foot, depending on fiber count and cable type. This guide outlines the main cost components, estimates, and budget ranges to help plan a fiber backbone project. The type of fiber optic cable selected based on your requirements, length of installation, and number of fiber.