Patent ID: 9219565
Filing Date: 2015-12-22
Classification: H04B,H04J

Abstract:
1. An optical transmission apparatus comprising: a wavelength multiplexing unit that performs wavelength multiplexing at least one among dummy light for each channel of WDM and dummy light for each sub-band including a plurality of the channels with a signal light; and a selecting unit that measures for each sub-band and corresponding to intensity of the channel-specific dummy light, transmission characteristics at a reception end, and according to results from the selecting unit that measures for each sub-band, selects for each of the sub-bands, any one among the channel-specific dummy light and the sub-band-specific dummy light, wherein the wavelength multiplexing unit wavelength multiplexes at least one among the channel-specific dummy light and the sub-band-specific dummy light selected for each of the sub-bands by the selecting unit with the signal light.