Deutschetelekom Ag

Gsi Helmholtzzentrum Fur Schwerionenforschung Gmbh

Michael Bousonville

Werner Weiershausen

Matthias Gunkel

Ralph Leppla

Malte Schneiders

Sascha Vorbeck

Peter Meissner

The invention at hand concerns a method and a system for transmitting data in an optical transmission system. A measuring signal is generated having a wavelength which differs from the wavelengths of a data signal that includes the data to be transmitted. The measuring signal is coupled in the optical transmission system, reflected after passing through the transmission path and decoupled again. The coupled measuring signal is compared with the decoupled reflected measuring signal. By taking into account the comparison results, a compensation of the change of the data signal resulting from the dispersion in the fiber is performed in such a way that the data included in the data signal can be used.

Dispersion measurement of optical fibres during operation

A system and method for Raman amplification of optical signals in a wavelength division multiplexing (WDM) optical transmission system includes transmitting optical signals within a transmission band via an optical waveguide between a transmitter and a receiver, Raman-amplifying the optical signals with at least one pump so as to distort an amplification profile of the Raman amplification within the transmission band, and rectifying the distorted amplification profile so as to compensate for the distortion.

Method for the raman amplification of optical signals and transmission system

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Mainz, Germany

Michael Bousonville