Optical transmitter and optical transmission method

摘要

An optical transmitter includes: a digital signal processor to generate a drive signal from input data; a controller to control an amplitude or power of the drive signal according to information relating to the digital signal processing of the digital signal processor; and an optical modulator to modulate input light with the drive signal controlled by the controller to generate an optical signal.

主权项

1. An optical transmitter, comprising:
a digital signal processor configured to generate a drive signal from input data; a controller configured to equalize an amplitude or power of the drive signal by controlling the amplitude or power of the drive signal to be substantially constant at a specified amplitude or power according to information relating to the digital signal processing of the digital signal processor; and an optical modulator configured to modulate input light with the drive signal equalized by the controller to generate an optical signal, wherein the digital signal processor includes a polarization scrambler to apply polarization rotation to the drive signal, and the controller equalizes the amplitude or power of the drive signal according to an angle of polarization rotation applied by the polarization scrambler.