Patent ID: 7596320
Filing Date: 2009-09-29
Classification: H04B

Abstract:
1. A method for preemphasizing an optical multiplex signal that comprises a plurality of signals having different wavelengths, transmitted by a transmitter by way of a plurality of substantially identical amplification sections to a receiver, comprising: determining on the transmitter a mean power level ( determining on the receiver an optical power level spectrum (P_Rx(λ) determining the sum power levels for the multiplex signal at the input to and output from each amplification section, and determining mean gain values ( calculating a gain function (G using the values which serves to correct a new signal power level values (P_Tx(λ)) to be set on the transmitter, where j represents an auxiliary variable; and using the correction function Q(λ) and an effective noise figure (F so that signal-to-noise ratios for signals of the multiplex signal can be matched to one another at the receiver, wherein angle brackets represent a mean value for a value entered within them.