High speed 1.3 mu m InGaAsP Fabry-Perot lasers for digital and analog applications

The digital and analog lightwave transmission characteristics of p-doped active layer 1.3- mu m InGaAsP Fabry-Perot (FP) lasers with semi-insulating current blocking layers were investigated experimentally. For a 1.2-Gb/s digital lightwave transmission system, it was found that the pulse jitter and the resulting power penalty were strongly dependent on the carrier lifetime of the lasers. This indicates that p-doped active layer FP lasers with decreased carrier lifetimes may be usable for a wider range of gigabit lightwave applications than previously considered. For analog lightwave applications, p-doped active layer FP lasers showed a 3-dB modulation bandwidth of 22 GHz for CW operation. These results suggest that this structure is suitable for use in both multigigabit digital and very-high-speed analog lightwave transmission systems.<
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