OPTICAL TRANSMISSION DEVICE, OPTICAL COMMUNICATION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPTICAL TRANSMISSION METHOD

摘要

It is intended to suppress the deterioration of the transmission quality of an optical signal propagating through an optical fiber due to the intensity variation of a control signal.;An exemplary aspect of the present invention includes outputting main signal light; generating a first optical signal by intensity-modulating an optical signal depending on a control signal; generating a second optical signal by intensity-modulating an optical signal depending on a differential component between a prescribed signal having a constant intensity and the control signal; outputting a wavelength-multiplexed optical signal by multiplexing the first optical signal being generated and the second optical signal being generated; and transmitting a transmitting signal by multiplexing the output main signal light being output and the wavelength-multiplexed optical signal being output.

主权项

1. An optical transmission device, comprising:
a transmitting unit configured to output main signal light; a control signal generating unit configured to output a wavelength-multiplexed optical signal including a control signal; and a first optical multiplexing unit configured to multiplex the main signal light and the wavelength-multiplexed optical signal and transmitting a transmitting signal, wherein the control signal generating unit includes a first optical modulator configured to intensity-modulate an optical signal depending on the control signal, the first optical modulator configured to output a first optical signal, a second optical modulator configured to intensity-modulate an optical signal depending on a differential component between a prescribed signal having a constant intensity and the control signal, the second optical modulator configured to output a second optical signal, and a second optical multiplexing unit configured to output the wavelength-multiplexed optical signal in which the first optical signal and the second optical signal being multiplexed.