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← TechnologyWhich impairment becomes significant when signal bandwidth widely exceeds fiber dispersion limitations?
A)Inter-symbol interference increases sharply✓
B)Spurious harmonic distortion dominates
C)Signal to noise ratio plateaus
D)Laser phase noise becomes critical
💡 Explanation
Increased dispersion causes pulse spreading, leading to inter-symbol interference because chromatic dispersion dictates differential arrival times of spectral components of each transmitted pulse. Therefore, interference drastically rises as bandwidth increases, rather than other distortion effects predominating.
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