Abstract

In this paper the mean current impulse response and standard deviation in Geiger mode for heterostructure APD are determined. The model is based on recurrence equations. These equations are solved numerically to calculate the mean current impulse response and standard deviation as a function of time. In this structure we illustrate the multiplication region with different ionization threshold energies that the impact ionization of the injected carrier type is localized and the feedback carrier type is suppressed. In fact for this structure, better control of spatial distribution of impact ionization for both injected and feedback carriers can be achieved. By enhancing the control of impact-ionization position, the structure achieved to high gain and very low noise.

© 2012 OSA

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