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← ScienceWhich outcome occurs when multi-mode fiber optic cabling experiences excessive modal dispersion?
A)Increased bit error rate manifests✓
B)Photodiode saturation reduces sensitivity
C)Wavelength-division multiplexing becomes unstable
D)Refractive index gradients become negligible
💡 Explanation
Increased bit error rate happens because modal dispersion causes constructive and destructive interference, therefore optical pulse broadening occurs, rather than photodiode saturation because of high power or wavelength instability affecting multiplexing.
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