The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2010
Filed:
Jan. 26, 2007
Cedric Gonnet, Paris, FR;
Elise Regnier, Bievres, FR;
Frans Gooijer, Eindhoven, NL;
Pascale Nouchi, Ville D'Avray, FR;
Cedric Gonnet, Paris, FR;
Elise Regnier, Bievres, FR;
Frans Gooijer, Eindhoven, NL;
Pascale Nouchi, Ville D'Avray, FR;
Draka Comteq B.V., Amsterdam, NL;
Abstract
A method for manufacturing a final optical fiber preform via overcladding of a primary preform having a cross section area is disclosed. The method includes at least one manufacturing step of the primary preform by deposit of an inner cladding and of a central core inside a tube of fluorine-doped silica, the tube being chosen such that it has a cross section area that is maximally about 15% less than the cross section area of the primary preform. With the method of the invention it is possible to manufacture a preform of large capacity at reduced cost which allows the drawing of an optical fiber having reduced transmission losses.