Tyco Telecommunications (us) Inc.

Tycom (us) Inc.

Dimitri Foursa

Bo Pedersen

Howard D Kidorf

Alexei Pilipetski

A method and apparatus to amplify an optical signal is described. A first filter splits an optical signal into a first and second parts. A first raman amplifier amplifies the first part. A second raman amplifier amplifies the second part. A combiner combines the amplified first and second parts.

Method and apparatus to perform lumped raman amplification

A method and apparatus to perform automatic gain equalization for a lightwave communications system is described. A first amplifier amplifies an optical signal to produce a first gain curve having a first gain maxima and a first gain minima of a first period. A second amplifier amplifies the optical signal to produce a second gain curve with a second gain maxima and a second gain minima of a second period, with the second gain maxima substantially coinciding with the first gain minima.

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Freehold, NJ, United States of America

Dimitri Foursa