A practical, engineering-focused guide to planning and installing underground fiber optic cables with the right cable structure, trench design and protection level for long-life, low-risk networks. Whether you're an electrical engineer, contractor, or student, this resource will help you master the essential calculations for selecting the. The successful deployment of Optical Fiber networks relies heavily on the proper installation of these intricate cables. The Importance of Proper Installation cannot be overstated, as it directly impacts the performance and longevity of the network. The Fiber Optic Association, Inc.