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Which 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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