Abstract
In this paper, we analyze the electro-optical modulation bandwidth of the two semiconductor optical amplifier (SOA) structures, traveling-wave and reflective. The model is based on the dynamic traveling-wave equations for forward and backward propagating photon densities of the signal, and the carrier rate equation. We provide the formulae for \(-\)3 dB bandwidth calculation for the transparency regime, which corresponds to deep saturation, typically used in modulation purposes. The comparison of analytical and numerical models shows a good agreement between the two. Analytical approach ensures a low computational resource occupation and an easy analysis of the parameters influencing the SOA bandwidth.
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