1
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 ...


2
Sophie Dubois, Gérard Orcel, Jean François Bourhis: Method of cooling an optical fiber while it is being drawn. Alcatel, Sughrue Mion PLLC, May 20, 2003: US06565775 (10 worldwide citation)

A method of cooling an optical fiber during drawing through contact with at least one cooling fluid in at least one cooling area, wherein fast cooling, i.e. cooling that is faster than cooling in the surrounding air, from an initial temperature of the fiber to a temperature at the end of fast coolin ...


3
Georges Dervieux, Jean Bares, Patrick Jacquot, Sophie Dubois, Josephine German: Process and apparatus for carburizing steel in an atmosphere of low pressure.. Innovatique, March 19, 1993: FR2681332-A1

The carburising process according to the invention consists in heating the articles to be treated to a temperature of between 800 DEG C and 1100 DEG C, preferably above 900 DEG C, in an oxygen-free gaseous atmosphere maintained by pumping at a pressure of between 1 and 5 mbar and in performing a plu ...


4
Sophie Dubois, Gerard Orcel, Jean Francois Bourhis: Method of cooling an optical fiber while it is being drawn. Sughrue Mion Zinn Macpeak & Seas Pllc, July 5, 2001: US20010006262-A1

A method of cooling an optical fiber during drawing through contact with at least one cooling fluid in at least one cooling area, wherein fast cooling, i.e. cooling that is faster than cooling in the surrounding air, from an initial temperature of the fiber to a temperature at the end of fast coolin ...


5
Gerard Orcel, Sophie Dubois, Jean Florent Campion: Preforms and optical fibers coated in alumina and/or silica. Alcatel, Sughrue Mion Zinn Macpeak & Seas Pllc, January 17, 2002: US20020006260-A1

The invention relates to an optical fiber preform comprising an optical core, optical cladding, and an outer sheath, in which the outer sheath includes a peripheral zone containing 20% to 100% by weight alumina and 80% to 0% by weight silica. Such a preform makes it possible to obtain optical fibers ...