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:
Mar. 13, 2012
Filed:
Apr. 07, 2004
Carlos Pedrido, Boudry, CH;
Carlos Pedrido, Boudry, CH;
Silitec Fibers SA, Boudry, CH;
Abstract
The method for fabricating an optical fiber comprises the steps of inserting a primary optical fiber preform () having a first primary axis (x) and an outer surface () into an overcladding tube () having a second primary axis (x) and an inner surface (), so that said outer surface and inner surface define an interior space (); holding the primary preform () in a centrally inserted position within the overcladding tube () with said first and second primary axes (x, x) in substantial alignment with each other; supplying overcladding grain () into the interior space () that is limited at the lower end of the overcladding tube () by means of a closure (); generating a condition of reduced pressure within the interior space () that is limited at the upper end of the overcladding tube () by means of an adjoiner (), which holds the primary optical fiber preform () and the overcladding tube () in position; and heating the unprocessed secondary preform (), that consists of the primary preform (), the overcladding tube () and the overcladding grain (), at its lower end to a softened state and simultaneously or subsequently drawing an optical fiber therefrom.