InPHBT driver circuit optimization for high-speed ETDM transmission

The design of high-speed circuits and optimization in function of technolog ical and geometrical parameters are presented. Various modeling aspects are discussed, such as model accuracy for InP heterojunction bipolar transisto r and modeling with technological and geometrical parameters. MUX-driver de sign and optimization for 40-Gb/s ETDM transmission is presented. The impac t of collector thickness ( W-c) on driver performances is evaluated and ass essed by circuit fabrication and measurements. Results of 40-Gb/s electrica l measurements and optical experiment with realized MUX-driver module are p resented.