Alcatel Lucent

Alcatel

Alcatel N.v.

Alcatel Alsthom Compagnie Generale D'electricite

Philippe Bousselet

Dominique Bayart

Christian Simonneau

Laurent Gasca

Lionel Provost

Eric Brandon

Christine Moreau

Jean-Luc Beylat

Serge Artigaud

Laurent Labrunie

Isabelle Bongrand

System and method for dispersion compensation tuning for a WDM optical transmission system. A tunable dispersion compensation module () is located at or substantially close to a transmitting end of the optical transmission line () and at least one distributed Raman amplifier having an Raman pump () is coupled to the transmission lineThe dispersion compensation is controlled by means of a signal derived from the Raman pump () which is fed through a control loop () to the tunable dispersion compensation module ().

System and method for automatic tuning of chromatic dispersion compensation for a WDM transmission system using raman distributed co-pumping

An optical fiber amplifier is considered comprising a mono-mode core, a first cladding around said core and at least a further cladding around said first cladding while said first cladding includes a ring shaped active region doped with rare earth material surrounding said mono-mode core. Advantageously, the first cladding is designed with a radial refractive index following an almost continuous decreasing function for increasing radius. The use of a continuously decreasing refractive index for the cladding at the outer border of the ring shaped active medium optimize the efficiency of the coupling between the core and the cladding.

Enhanced pump absorbing double-clad fiber

Multiple wavelength source

Frequency separator-and-mixer apparatus for guided optical waves

Growing community of inventors

Leudeville, France

Philippe Bousselet