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← ScienceWithin fiber optic communication, which mechanism limits the maximum data transmission distance due to signal degradation?
A)Modal dispersion causing pulse spreading✓
B)Polarization mode inducing beam wandering
C)Chromatic aberration triggering wavelength shifts
D)Rayleigh scattering enhancing light divergence
💡 Explanation
When light pulses travel in an optical fiber, modal dispersion occurs because different modes propagate at slightly different velocities, causing the pulses to spread. Therefore, pulse overlap limits the data rate and distance, rather than polarization, aberration, or scattering which have different primary effects.
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