Method of optical transmission and optical transmitter used in the same

摘要

A method of optical transmission comprises steps of generating a light signal, controlling a wavelength of the light signal in accordance with a correcting signal, and modulating an intensity of the light signal supplies from a light source (1) to generate an output light signal in accordance with a modulating signal. The wavelength change of the light signal generated by the light source (1) coincides with the wavelength change which occurs during the modulating step, so that the wavelength change is cancelled in the output light signal. An optical transmitter used in the method comprises a light source (1) which generates a light signal, a correcting signal generating circuit (3) which supplies the light source (1) with a correcting signal for changing the wavelength of the light signal generated by the light source(1) and an optical modulator (2) which modulates an intensity of the light signal supplied from the light source (1) to generate an output light signal in accordance with a modulating signal.