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Which outcome occurs when an optical fiber's bend radius excessively decreases?

A)Increased modal dispersion occurs
B)Refractive index remains constant
C)Fresnel reflection becomes negligible
D)Polarization mode shift stabilizes

💡 Explanation

Increased modal dispersion results from exceeding bend radius limits; this causes increased wave path differences as cladding modes leak out disrupting modal equilibrium because radiation losses happen. Therefore, the signal degrades due to interference, rather than maintaining consistent propagation.

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