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A single-mode step-index fiber or multimode step-index fiber allows propagation of only one transverse electromagnetic wave.

A single-mode step-index fiber or multimode step-index fiber allows propagation of only one transverse electromagnetic wave. Correct Answer True

Single mode step index fiber is also called as mono-mode step index fiber. As the name suggests, only one mode is transmitted and hence it has the distinct advantage of low intermodal dispersion.

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