Apparatus and method for retrieving data from a WDM signal, transmitter and method for transmitting a WDM signal, and WDM system

摘要

An apparatus for retrieving data from an optical wavelength-division multiplexing (WDM) signal received via a WDM path in a wavelength-division multiplexing transmission system having a plurality of channels associated with different wavelengths includes a demultiplexer configured to split the optical WDM signal into a plurality of signals each associated with one of the channels, and a calculator configured to calculate data associated with a respective one of the channels based on the signal associated with the respective channel and taking information on determined crosstalk interferences of other channels to the respective channel into consideration. A transmitter for transmitting an optical WDM signal via a WDM path in a WDM transmission system having a plurality of channels associated with different wavelengths includes a predistorter configured to predistort data associated with a respective one of the channels by information on determined crosstalk interferences of other channels to the respective channel, and a signal source.

主权项

1. An apparatus for retrieving data from an optical wavelength-division multiplexing (WDM) signal received via a WDM path in a WDM transmission system comprising a plurality of channels associated with different wavelengths, comprising:
a demultiplexer configured to split the optical WDM signal into a plurality of signals each associated with one of the channels; a calculator configured to calculate data associated with a respective one of the channels based on the signal associated with the respective channel and taking information on determined crosstalk interferences of other channels to the respective channel into consideration; and analog digital converters to convert the plurality of signals into digital signals, wherein the calculator is configured to multiply a receipt vector by an inverse of a crosstalk matrix, wherein each element of the receipt vector comprises the digital signal associated with one of the channels and wherein the crosstalk matrix identifies crosstalk interferences between the channels in the WDM transmission system.