What will happen if a fiber is smaller than its minimum bend radius?

Bending a fiber cable over its MBR is one of the biggest factors in fiber damage in projects to install fiber cables. This practice can break the fibers inside or increase fiber attenuation (fiber power loss) than the manufacturer’s specifications. Although the internal fibers are already broken, you can not see any physical damage to the outer skin at all. As a result, you must replace the entire section or even the entire length of the cable. As a good practice, all fibers must be thoroughly tested after cable installation.