Which outcome occurs when optical fiber cable experiences excessive bending during signal propagation?

💡 Explanation

When an optical fiber is bent beyond its minimum bend radius, light undergoes a tunneling effect because the angle of incidence at the core-cladding interface falls below the critical angle, leading to signal loss. Therefore, signal attenuation increases from radiated light, rather than dispersion or refractive shifts which require different physical mechanisms and material properties.

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