Fibre optic cables typically fail due to degradation of the outer jacket rather than the optical fibre itself. Specifically, ultraviolet (UV) exposure, moisture ingress, thermal ageing and biological damage such as termite activity drive this process. Over time, these factors reduce mechanical. Below, we explore common fibre optic cable problems and provide troubleshooting solutions. However, improper splicing can result in significant signal loss. Understanding the common causes of. Fiber optic networks are celebrated for their speed and reliability, but even the best systems can encounter problems.