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← ScienceWhich cause limits signal propagation in fiber optics?
A)Rayleigh scattering✓
B)Chromatic dispersion
C)Modal interference
D)Fresnel reflections
💡 Explanation
Rayleigh scattering attenuates guided EM waves because microscopic density fluctuations cause photons to scatter in directions away from the fiber axis. Therefore, signal strength reduces, rather than suffering distortions from dispersion or reflections.
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