Protection of Fiber Optic Sensors from External Damage

Fiber coating is a crucial component in the manufacture and operation of optical sensors. It refers to the thin layer of material applied to the surface of an optical fiber to protect it from environmental factors and enhance its performance. Accidental damage to ODiSI fiber optic strain sensors can occur in a variety of ways. However, optical fibers are also vulnerable to damage from various sources, such as bending. Although a crack creates a significant strain field at its tip, its effect on the strain field becomes nearly negligible only a few centimeters away from the crack, which complicates the task of damage detection. Two approaches are currently in use. The first one is a local app...