Which mechanism limits signal propagation distance in fiber optic cables used in telecommunications networks?

💡 Explanation

When signals propagate long distances, chromatic dispersion broadens pulse widths, because different wavelengths travel at slightly different speeds within the fiber, eventually causing pulse overlap and data loss. Therefore chromatic dispersion limits distance, rather than simply latency, reflection, or refractive index changes via other optical effects, which would necessitate alternative circumstances.

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