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Jean Florent Campion: Method of manufacturing a silica powder and use of such a powder in making an optical fiber preform. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, April 11, 2000: US06047568 (10 worldwide citation)

A method of manufacturing a silica powder using a sol-gel technique, wherein a suspension consisting of synthetic silica soot, having a specific surface area of less than 80 m.sup.2 /g, is made in water to form a concentration of 50% to 75% by weight of silica; the suspension is gelled; the resultin ...


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Jean Florent Campion, Sophie Dubois, Gérard Orcel: Preform including a barrier layer preventing hydrogen from diffusing into optical fiber manufactured from said perform, and a method of preparing such a preform. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, March 13, 2001: US06201917 (10 worldwide citation)

An optical fiber preform comprising a core of radius R, and a sheath comprising cladding and outer sheath, wherein the outer sheath comprises an inner zone, and a peripheral zone made of silica doped with alumina and of thickness lying in the range 0.08 R to 2.2 R, and the proportion by weight of al ...


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Jean Florent Campion, Jacques Goudeau, Jean Francois Chariot, Christelle Lavallade: Method of manufacturing a silica powder. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, June 6, 2000: US06071487 (8 worldwide citation)

In the method, a suspension of silica particles in water is provided, the suspension is gelled, the resulting gel is dried under microwaves, the dried gel is fractioned into silica granules having a diameter lying in the range 10 .mu.m to 1000 .mu.m, having an apparent density of about 0.5 g/cm.sup. ...


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Jean Florent Campion, Isabelle DeCaux, Philippe Dupont, Terry Voots, José G Piffaretti, Roger Charlton: Method for reducing the hydrogen sensitivity of optical fibers at 1380nm-1410 nm. Alcatel, Sughrue Mion PLLC, March 9, 2004: US06704485 (7 worldwide citation)

A method for reducing the hydrogen aging loss of silica optical fibers by irreversible reaction of the peroxide defects with deuterium is described. This method comprises the step of contacting the optical fiber with deuterium by exposure to a gas mixture containing deuterium at a temperature compat ...


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Jean Florent Campion: Method of manufacturing silica powder and use of such powder in making an optical fiber preform. Alcatel, Sughrue Mion Zinn Macpeak & Seas PLLC, March 30, 1999: US05888587 (6 worldwide citation)

A method of applying a silica having fluorine therein by spraying silica simultaneously with a fluorine-containing gas by a POD method plasma torch.


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Gérard Orcel, Marc Nicolardot, Jean Florent Campion: Method of manufacturing large capacity preforms by MCVD. Alcatel, Sughrue Mion PLLC, January 24, 2006: US06988379 (6 worldwide citation)

The invention provides a low cost method of manufacturing high capacity preforms by chemical vapor deposition. More particularly, there is described a method of manufacturing an optical fiber preform, which method comprises the steps of providing a substrate tube of silica doped with sufficient chlo ...


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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 ...


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Ludovic Fleury, Louis Anne de Montmorillon, Florent Beaumont, Pierre Sillard, Maxime Gorlier, Pascale Nouchi, Jean Florent Campion, Christine Labatut: Step index optical fiber with doped cladding and core, a preform, and a method of fabricating such a fiber. Alcatel, Sughrue Mion PLLC, June 7, 2005: US06904213 (4 worldwide citation)

The invention provides a step index optical fiber which presents cladding having an index lower than the index of silica and a core with an index higher than the index of silica. The fiber is obtained by drawing a preform made by chemical vapor deposition using a deposition tube of index lower than ...


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Jean Florent Campion: Prodn. of blanks for making silica glass multi-ferrules. Alcatel Cable Interface, May 19, 1995: FR2712277-A1 (4 worldwide citation)

Process for making blanks comprising a piece of silica glass with a plurality of parallel longitudinal channels for the prodn. of silica glass multi-ferrules comprises: (a) dispersing synthetic silica with a particle size of less than 75 micrometres in a molten polymer using a calender heated to 80- ...



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