Phase-controlled slow and fast light in current-modulated semiconductor optical amplifiers

Details Phase-controlled slow and fast light in current-modulated semiconductor optical amplifiers Phase-controlled slow and fast light in current-modulated semiconductor optical amplifiers

2009-03-09

arxiv.org/abs/0903.1545v1

Physics

Optics

15 pages, 8 figures

Scientific paper

We present a theoretical study of the slow and fast light propagation in semiconductor optical amplifiers based on coherent population oscillations. By modulating the injection current to force the population oscillations we can modify the delay or advancement of light signals. Specifically, it is shown that the relative phase of the optical signal to the bias current modulations can be used as a knob for changing light propagation from delay to advancement. In addition, we analyze the effect of the modulation current for slow light in vertical cavity surface emission lasers (VCSELs) by taking into account the cavity effects. It is shown that the change of the depth of the modulation allows to tune the structural resonance, which in turn produces an enhancement of the delay.

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