Author(s)

Xiaojuan Wang, Xinqiang Li, Qingan Ding, Bowen Nie, Changqing Liu and Juan Song

Corresponding Author

Qingan Ding

ABSTRACT

Based on the rate equations of the semiconductor laser, we use the SDD (Symbolically defined device) component for simulation in ADS (Advanced designed systems). During the modeling process, the junction voltage is introduced by the classic Shockley relationship, and the rate equations are transformed. Because the magnitude of the numerical solution of the carrier density and photon density in the rate equations of the laser are generally very large, the simulation process of the equivalent circuit model of the semiconductor laser will cause numerical overflow. In this paper, the transformations of the rate equations are used to improve the convergence problem caused by the non-uniqueness of the numerical solution. The model simulates the DC, AC and transient characteristics of a semiconductor laser by writing the converted rate equations into an SDD device.

KEYWORDS

Semiconductor lasers; circuit model; rate equations; non-physical solutions; convergence; ADS