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← ScienceWhich field interference reduces signal integrity in fiber optic cables?
A)Modal dispersion causes signal broadening✓
B)Material stress induces birefringence shifts
C)Rayleigh scattering alters arrival times
D)Fresnel reflection degrades input coupling
💡 Explanation
Modal dispersion blurs signal outputs because light rays take varied paths within the fiber. Therefore, shorter pulse duration increases information capacity, rather than material dispersion, which introduces wavelength-dependent velocities.
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