Laurent Gasca, Alain Pastouret, Christine Moreau, Pascal Baniel, Christian Belouet: Optical guide comprising an amplifier medium and a method for producing said guide. Alcatel, Sughrue Mion PLLC, April 18, 2006: US07031590 (6 worldwide citation)

The present invention concerns an optical guide (100) comprising an amplifier medium including: a core (10) in a main matrix of a transparent material, the main matrix containing particules (1, 2), each particule being formed of a submicronic matrix distinct from the main matrix and doped by an acti ...

Bertrand Desthieux, Laurent Gasca, Christian Le Sergent, Christophe Sinet: Optical fiber for a flat-gain optical amplifier. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, January 16, 2001: US06175445 (5 worldwide citation)

The invention relates to an optical fiber having a core based on silica with at least one fluorescent dopant distributed over the entire section of the core, a central zone co-doped with a co-dopant chosen from Al and P, and a peripheral zone co-doped with the other co-dopant chosen from Al and P. T ...

Xavier Andrieu, Lionel Provost, Laurent Gasca: Multimode optical fibre. Alcatel, Sughrue Mion PLLC, September 9, 2008: US07424195 (5 worldwide citation)

Optical fiber having a multimode core (10) comprising:—a first zone (11), which is homogeneous, made of a first material, which has a first refractive index;—a second zone (12) made of at least one second material, which has a second refractive index, which is less than the first index, that second ...

Jean Florent Campion, Bernard Jouvenel, Laurent Gasca: Device for doping silica powder. Alcatel Fibres Optiques, Sughrue Mion Zinn Macpeak & Seas PLLC, December 28, 1999: US06007786 (5 worldwide citation)

A device for doping silica powder with a dopant includes an arrangement for receiving silica soot particles or previously fabricated silica granules. The particles or granules contained in the receiving arrangement are heated to a temperature sufficient to allow agglomeration of the soot particles i ...

Laurent Gasca, Stéphanie Blanchandin, Alain Pastouret, Christian Simonneau: Method for making an optical fiber comprising nanoparticles and preform used in the manufacture of such a fiber. Alcatel Lucent, Harness Dickey & Pierce, February 2, 2010: US07657142 (3 worldwide citation)

The invention concerns a method for making an optical fiber (18) including the following steps: producing a preform (10) containing nanoparticles provided with an active element including at least one recess (14) proximate at least part of the nanoparticles; fiber drawing of the preform (10) by intr ...

Lionel Provost, Christian Simonneau, Isabelle Bongrand, Philippe Bousselet, Christine Moreau, Dominique Bayart, Laurent Gasca: Enhanced pump absorbing double-clad fiber. Alcatel, Sughrue Mion PLLC, April 25, 2006: US07034995 (2 worldwide citation)

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. Advantageo ...


Xavier Andrieu, Anne Decaumont, Laurent Gasca: Silica optical fiber with a double polymer cladding. Alcatel, Sughrue Mion PLLC, February 8, 2005: US06853787 (1 worldwide citation)

An optical fiber comprises a silica multimode optical core having a refractive index n1 and at least one polymer optical cladding having a refractive index n2, with n1>n2. It further comprises a heterogeneous polymer intermediate optical cladding situated between the multimode core and the optical c ...

Laurent Gasca, Gilles Melin, Xavier Rejeaunier, Simon Lempereur, Christine Moreau, Anne Fleureau: Method of fabricating an optical fiber with microstructures. Alcatel, Sughrue Mion PLLC, May 17, 2005: US06895155 (1 worldwide citation)

An optical fiber with microstructures comprises a plurality of capillary tubes disposed around a central rod and including a self-cleaning layer including molecules able to react with hydroxyl molecules to produce volatile gaseous substances.

Carlos De Barros, Lionel Provost, Marianne Molina, Isabelle Riant, Laurent Gasca: Optical filter. Alcatel, Sughrue Mion PLLC, February 22, 2005: US06859585 (1 worldwide citation)

An optical filter comprising a slanted Bragg grating inscribed in an optical fiber portion comprising a core having a refractive index n1 and a radius Rcore and a cladding having an average refractive index n2 lower than n1 and a radius Rcladding, the core and the cladding of the fiber being doped w ...