InGaAsP laser with semi-insulating current confining layers

Abstract
The fabrication and performance characteristics of a InGaAsP laser structure with semi-insulating current confining layers are reported. The semi-insulating layers are Fe-doped InP and are grown using the metalorganic chemical vapor deposition growth technique. The lasers have threshold currents in the range 20–30 mA and external differential quantum efficiency ∼0.2 mW/mA/facet at 30 °C. The bandwidth for small-signal response is ∼2 GHz which suggests that the laser structure is suitable for high bit rate lightwave transmission systems. Initial aging results yield an estimated operating lifetime of 10 years at 20 °C.

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