Optical transmission system having cascaded raman
AssigneeSiemens Aktiengesellschaft
InventorsPeter Krummrich, Richard Neuhauser
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Abstract
An optical transmission system for wavelength-division multiplex signals, having cascaded Raman amplifiers, has a number of pump sources for each Raman amplifier, each having different pump wavelengths sets from one pump source to another pump source. This results in a flat gain spectrum for all the channels in a WDM transmission signal.
Claims16
An optical transmission system, comprising a plurality of cascaded Raman amplifiers which each include a plurality of pump sources, wherein, in order to achieve a flat gain spectrum for a signal which has a plurality of optical channels, the plurality of pump sources have at least two different wavelength sets respectively associated with at least two different Raman amplifiers.
Dependencies are inferred from the claim text.