Which effect determines maximum data rate in optical fiber given specific modal dispersion characteristics and length?

💡 Explanation

When modal dispersion exists, different modes propagate at different speeds, causing pulse broadening because of varying path lengths; if pulse broadens too much, overlapping symbols occur, leading to intersymbol interference. Therefore ISI limits data rate, rather than chromatic aberration, scattering, or reflection, which affect signal strength with different mechanisms.

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