Circuit modeling based optimization of high speed carrier depletion silicon modulators

Simple RC model, which only considered PN junction capacitance and series resistor, and complete circuit model considering parasitic capacitances of a carrier depletion based optical modulators are studied. Modulation efficiency and bandwidth of the modulators are investigated using analytical models and numerical simulations respectively. Through particle swarm optimization (PSO) a repetitive algorithm is applied to find the feasible maximum of circuit bandwidth.