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← TechnologyWhich undesirable outcome develops in long fiber optic cables because of extended signal transmission?
A)Chromatic dispersion widens signal pulses✓
B)Modal birefringence creates pulse splitting
C)Four-wave mixing generates new frequencies
D)Stimulated Raman scattering diminishes power
💡 Explanation
Chromatic dispersion causes signal pulses to widen because different wavelengths travel at slightly different speeds, therefore it distorts the signal, rather than modal birefringence or four-wave mixing which are polarization-based and nonlinear effects, respectively.
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