Centre National De La Recherche Scientifique

Université De Limoges

Alcatel Lucent

Draka Comteq B.v.

Horiba Abx Sas

Université´de Rouen

Sébastien Fevrier

Philippe Roy

Pierre Sansonetti

Christian Simonneau

Vincent Couderc

Lionel Provost

Laurent Gasca

Alain Barthelemy

Ekaterina Burov

Philippe Nerin

Philippe Leproux

Christine Moreau

Jean-Louis Auguste

Jean-Marc Blondy

Frederic Gerome

Pierre-Alain Champert

Ammar Hideur

Caroline Lecaplain

Ludovic Grossard

Leonid Kotov

Christian Simmonneau

The invention relates to a laser oscillator comprising an amplifying optical fiber (MA) inserted in a resonant cavity so as to act as an active medium, and pumping means (DL, CP) causing a population inversion in said amplifying optical fiber, characterized in that said amplifying optical fiber comprises at least two cores (C1, C2) optically coupled to each other in a common cladding (G), and in that the shapes, sizes, refractive indices and the relative arrangement of said cores are chosen so that super-modes are supported, at least one (SMI) of which super-modes has, in an emission spectral band of said laser oscillator, a normal chromatic dispersion.

Fiber-optic laser oscillator

Device for the emission or amplification of a signal, comprising an optical fiber () having a solid core () of refractive index n, made of a silica glass doped with a rare earth, such as erbium, ytterbium or neodymium, said core being surrounded by an optical cladding () comprising at least a pair of silica layers composed of a first, inner layer (), having a refractive index greater than the refractive index nof the core (), covered by a second, outer layer (). The optical fiber () comprises several pairs of silica layers () around the core (), each pair comprising an inner layer () of refractive index nand an outer layer () of refractive index n, the refractive index nof the outer layer being lower that the refractive index nof the inner layer of the same pair.

Rare earth-doped fiber optic device for emitting or amplifying a signal in the 'S' band

A dedicated polychromatic light generating device including optical pumping devices used to deliver radiation with at least two different excitation wavelengths and a light-guiding device used to deliver polychromatic light at an output when excited by the radiation in a non-linear interaction regime.

Device for generating polychromatic light with a continuous spectrum

An optical module for chromatic dispersion compensation comprises an optical fiber wound so as to present a variable radius of curvature. The fiber has an index profile such that it has, for the main propagation mode, a negative dispersion value having a minimum at a given wavelength in a given spectral band. The value and the spectral position of the dispersion minimum vary with the radius of curvature of the fiber. The module allows the introduction of a large chromatic dispersion compensation value overall of a given spectral band, as well as compensation corrections for specific wavelengths inside the given spectral band.

Chromatic dispersion compensation module

Growing community of inventors

Limoges, France

Sébastien Fevrier