OPTICAL TRANSMITTER AND OPTICAL MODULE

摘要

An optical transmitter comprising a semiconductor laser module (9) outputting a to-be-modulated continuous light and an optical module (7) having a semiconductor optical modulator device (1) of field absorption type for modulating the to-be-modulated continuous light with a modulating electric signal fed from a transmission channel substrate to output a modulated optical signal, wherein the semiconductor laser module (9) has light intensity varying means (9a) for variably controlling the light intensity of the modulating optical signal by using the intensity of the to-be-modulated continuous light.