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← ScienceWhich effect occurs primarily because of wave interference inside a multi-mode optical fiber?
A)Modal dispersion increases with length✓
B)Attenuation decreases signal power
C)Chromatic aberration affects all signals
D)Fresnel reflection degrades signal quality
💡 Explanation
Modal Dispersion arises because different modes travel at different velocities, leading to pulse broadening; therefore, the pulses spread, rather than undergo reflection issues or power loss, under ideal conditions but fiber imperfections cause imperfections.
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