Which phenomenon limits data transmission rate in optical fibres beyond a certain bandwidth?

💡 Explanation

When optical fibres transmit signals beyond a certain bandwidth, chromatic dispersion causes different wavelengths of light to travel at different speeds, resulting in pulse broadening and inter-symbol interference, limiting the data rate. Therefore pulse broadening dominates, rather than attenuation, scattering, or signal loss which exist at lower bandwidths or shorter distances.

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