DRIVE CIRCUIT FOR ELECTROABSORPTION MODULATOR AND OPTICAL TRANSMITTER EMPLOYING MODULATOR

摘要

PURPOSE: To realize long distance transmission by preventing degradation of waveform. ;CONSTITUTION: The drive circuit for electroabsorption modulator comprises a light source 2 of carrier light, an electroabsorption modulator 4 for absorbing the carrier light depending on the applying voltage and outputting an intensity modulated signal light, means 8 for applying an offset voltage to the modulator 4 so that the applying voltage comes within a region for generating the carrier light stably from the light source 2, and means 10 for receiving and input signal and superposing a corresponding modulation signal on the offset voltage.;COPYRIGHT: (C)1996,JPO