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Alain Drouart, Benoit Gouez, Bernard Jouvenel, Yves Lumineau, Max Matau, Pierre Ripoche: Method of building up an optical fiber preform by plasma deposition, and an optical fiber obtained from the preform built up by the method. Alcatel Fibres Optiques, Sughrue Mion Zinn Macpeak & Seas, May 28, 1996: US05522007 (45 worldwide citation)

A method of using a plasma to build up an optical fiber preform consists in injecting hydroxyl ions in a controlled manner into the build-up silica that is deposited on the preform. The invention is applicable to the manufacture of optical fibers, in particular monomode fibers.


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Alain Drouart, Benoît Gouez, Pierre Ripoche: Method of making a glass fiber preform with adjusting a spacing while increasing acceleration of a starting glass powder. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, March 20, 2001: US06202447 (27 worldwide citation)

The invention relates to manufacturing glass fiber preforms. It relates to a method comprising rotating preform about its own axis, and displacing a plasma torch in translation relative to the preform in a direction parallel to the axis of the preform, the axes of the flame and of the preform and be ...


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Bernard Jouvenel, Pierre Ripoche: Induction plasma torch. Alcatel Fibres Optiques, Sughrue Mion Zinn Macpeak & Seas PLLC, October 14, 1997: US05676863 (15 worldwide citation)

The present invention relates to an induction plasma torch of the type used in plasma deposition methods for depositing pure or doped silica when manufacturing preforms for optical fibers, the plasma torch comprising:


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Alain Drouart, Pierre Ripoche, Bernard Wurier: Butt welding optical fiber preforms with a plasma torch. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, January 30, 2001: US06178779 (10 worldwide citation)

The invention relates to a method of assembling two optical fiber preforms together end-to-end, the method comprising the following operations:


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Daniel Coelho, Jean Pascal Dumont Monnet, Pierre Ripoche: Inductive thermal plasma torch. Alcatel, Sughrue Mion PLLC, November 7, 2006: US07132620 (8 worldwide citation)

The invention relates to an inductive thermal plasma torch comprising a confinement tube that comprises, longitudinally in relation to the tube, metal fingers which are insulated from each other, an ignition device that comprises an igniter (4) and an igniter support (1, 3), the purpose of the ignit ...


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Jacques Goudeau, Pierre Ripoche, Patrick Humbert: Plasma overcladding process and apparatus having multiple plasma torches. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, April 10, 2001: US06215092 (6 worldwide citation)

A method and associated apparatus for increasing the over cladding rate in perform production while maintaining the integrity of the glass quality of the cladding. The method and apparatus are designed to utilize the full capacity of the generator to thereby improve the overall deposition speed with ...


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Patrick Humbert, Pierre Ripoche, Joël Landi, Jacques Goudeau: Apparatus for supporting a preform having a supporting core. Draka Comteq, Sughrue Mion Pllc, November 6, 2007: US07290408 (3 worldwide citation)

The invention relates to apparatus for supporting a preform manufactured in an installation for manufacturing or building up preforms having supporting cores, said installation including at least rotation means having a horizontal axis of rotation and two mounting points between which the supporting ...


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Patrick Humbert, Pierre Ripoche, Joël Landi, Jacques Goudeau: Apparatus for controlling the sag of a preform in an installation. Alcatel Fibres Optiques, Sughrue Mion Zinn Macpeak & Seas PLLC, March 6, 2001: US06196028 (3 worldwide citation)

The invention relates to apparatus for supporting a preform manufactured in an installation for manufacturing or building up preforms having supporting cores, said installation including at least rotation means having a horizontal axis of rotation and two mounting points between which the supporting ...


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Alain Drouart, Benoît Gouez, Yves Lumineau, Pierre Ripoche, Jean Florent Campion: Method of purifying natural or synthetic silica, and application thereof to depositing purified natural or synthetic silica on an optical fiber preform. Alcatel, Sughrue Mion PLLC, November 12, 2002: US06477864 (3 worldwide citation)

Natural or synthetic silica is deposited on a preform set into rotation in front of a plasma torch which moves back and forth substantially parallel to a longitudinal direction of the preform, a first feed duct feeds the plasma with grains of natural or synthetic silica while a second feed duct feed ...