OPTICAL TRANSMISSION DEVICE AND CONTROL METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To maintain the communication quality of an optical signal by suppressing transient gain variation when the number of signal wavelengths is changed.

SOLUTION: The optical transmission device is provided with: an optical power control device 24 for making optical power variable in each wavelength component corresponding to a wavelength channel about light including signal light and natural emission light; a wavelength arrangement information acquiring part 6a for acquiring arrangement information of a wavelength channel of the signal light; and a control part 6b for controlling the power control device 24 so that the optical power of the wavelength component of the optical light is substantially equivalent to optical power about a wavelength other than the wavelength of the signal light, on the basis of the arrangement information acquired by the wavelength arrangement information acquiring part 6a.

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