faults in communication optical cables can stem from various factors, including physical damage, bend radius violations, water ingress, connector and splice issues, fiber aging, extreme temperatures, rodent damage, manufacturing defects, environmental conditions . faults in communication optical cables can stem from various factors, including physical damage, bend radius violations, water ingress, connector and splice issues, fiber aging, extreme temperatures, rodent damage, manufacturing defects, environmental conditions . Fiber optic cables are the backbone of modern communication systems. They deliver enormous volumes of data through strands of glass thinner than a human hair. However, when these delicate fibers are bent, crushed, or exposed to harsh environments, the light signal weakens — resulting in high. This document presents a troubleshooting guide for fiber optic cables once deployed and in regular use. Understanding the common causes of. Faults in communication optical cables can occur due to various factors, ranging from installation issues to environmental factors and natural wear and tear. Minor defects or sc atches are acceptable while major ones are not.