Alcatel

Alcatel Lucent

Nokia Solutions and Networks Oy

Alcatel Submarine Networks

Olivier Courtois

Gabriel Charlet

Jean-Christophe Antona

Vincent Bouder

It is disclosed a system for gain equalization in an optical communication system, comprising a fiber link with a two-stage EDFA with an inter-stage access, and in the inter-stage a Dispersion Compensating Fiber, a Raman pump source (RMP) in the contra-propagating way, a Variable Optical Attenuator and a gain flattening filter. The Raman pump is adapted to provide a first gain slope with an opposite trend with respect to the filter and VOA, and is further adapted such that the pump power can be controlled so as to modify the gain slope and get the gain equalization.

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Antony, France

Olivier Courtois