FIELD: physics, communication.
SUBSTANCE: invention is related to optical communication equipment and may be used for emphasis of transmitted signals in channels of multiplexed signals on transmission route with points of inlet and/or outbranching, which considers relative reduction of signal/noise ratios between transmitted signals of different categories or groups of channels, i.e. express-channels and channels of outbranching or inbranching, or outbranching/inbranching. For this purpose average signal capacities of different channel groups are established relative to each other in order to achieve specified ratios of signal-noise in appropriate groups. Moreover, ratios of signal-noise are balanced inside group of channels in points of their completion. Control protocols are described for control of emphasis steps. Method is also applicable for point-to-point connections, and also for transparent optical networks.
EFFECT: higher noise immunity at lower ratios of signal/noise.
29 cl, 4 dwg
