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For realizing high-speed and low-power-dissipated optical switches, we designed a CMOS driver circuit connected to transmission line. In order to obtain the high output voltage and low power dissipation, we designed the driver circuit by using stacked CMOS inverters. In order to transmit high-speed pulses, we studied the optimal output resistance and voltage waveforms in the transmission line. Moreover, by loading lumped inductance (L) in the output of the CMOS driver circuit, it is shown that we can suppress the propagation delay of this circuit from 900ps to 600ps.