FDTD simulation of optoelectronic switches

摘要

Abstract: In this paper, the finite-difference time-domain (FDTD) technique is used for the full wave analysis of picosecond and subpicosecond photoconductive switches. By applying a novel voltage source formulation and the lumped-element technique, pulse generation through single switching unit in a transmission line and switches in different pulse-forming networks are simulated using the FDTD model. The simulation results agree well with the theoretical analysis and experimental data. The effects of the dispersion of the transmission line and the pulse-forming networks on ultrashort pulse formation are also studied using the FDTD simulation model. !12