Alcatel

Fran&ccedil;ois Dorgeuille

Jean-Yves Emery

Dominique Chiaroni

Nicolas Le Sauze

Thierry Zami

Christopher Janz

Fabienne Gaborit

Alain Pons

B&eacute;atrice Dagens

In order to be able to use a semiconductor light amplifier of conventional type and operating under gain saturation conditions while nevertheless providing constant gain for an optical signal to be amplified, the device comprises means for producing a compensation light wave and coupling means for injecting the optical signal to be amplified and the compensation light wave into the amplifier. The compensation light wave presents amplitude modulation such that when combined with the optical signal to be amplified the overall amplitude modulation is eliminated or at least attenuated. The device is applicable to optical transmission systems operating at a single wavelength or with wavelength division multiplexing.

Light amplifier device

An active structure in the semiconductor die of an amplifier or converter includes a plurality of stacked active layers with different compositions. The different compositions lead to a spectral offset between the respective gain bands of the layers which widens the gain band of the amplifier or the optical bandwidth of the converter. Applications include fiber optic telecommunication networks.

Semiconductor optical component and amplifier and wavelength converter consisting thereof

Growing community of inventors

Paris, France

François Dorgeuille

Growing community of inventors

Paris, France

Fran&ccedil;ois Dorgeuille

François Dorgeuille