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← ScienceWhich constraint is imposed on resolution because signals must propagate through a fiber-optic link?
A)Chromatic dispersion broadens narrow pulses✓
B)Modal interference generates bit errors
C)Refraction induces back reflections
D)Attenuation reduces signal strength unacceptably
💡 Explanation
Chromatic dispersion limits resolution because different wavelengths propagate at different speeds, and pulse broadening accumulates with distance because of the material's refractive index, resulting in inter-symbol interference. Therefore chromatic dispersion limits achievable bandwidth rather than attenuation that limits signal range.
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