Mach-Zehnder type optical modulator, optical communication system and control method of Mach-Zehnder type optical modulator

摘要

Since the timing between a plurality of driving electric signals can not be controlled more accurately, the Mach-Zehnder type optical modulator according to the present invention comprises a demultiplexing means for demultiplexing the input light, and a demultiplexing means for demultiplexing each demultiplexed input light into A first waveguide and a second waveguide for guiding light, a combining means for combining and outputting the input lights guided through the first and second waveguides, a signal generating circuit for generating a signal to be transmitted, , A plurality of electrodes arranged along one or both of the first and second waveguides for modulating the input light according to the signal, and a plurality of electrodes arranged in each of the plurality of electrodes A detection means for detecting the intensity of the output light output from the multiplexing means, and a timing control means for controlling the timing of applying a signal to each of the plurality of electrodes based on the intensity of the output light detected by the detection means;