公开(公告)号：CA2267916A1

公开(公告)日：1998-05-07

申请号：CA2267916

申请日：1997-10-03

Applicant: CORNING INC

Inventor： GLAESEMANN SCOTT G ,  DICKINSON JAMES E JR ,  SNIPES JAMES A ,  WISSUCHEK DONALD J JR ,  TAO TINGHONG

IPC: C03B37/027 ,  C03B37/029

Abstract: A glass preform (30) for making optical waveguides has surface impurities such as silicon carbide or silicon nitride. The preform is drawn in a furnace (12) that is supplied with oxygen via a conduit (40). The oxygen causes the impurities to oxidize and not effect the strength of the fiber.

公开(公告)号：AU744011B2

公开(公告)日：2002-02-14

申请号：AU6908298

申请日：1997-10-03

Applicant: CORNING INC

Inventor： DICKINSON JAMES E JR ,  GLAESEMANN SCOTT G ,  SNIPES JAMES A ,  TAO TINGHONG ,  WISSUCHEK DONALD J JR

IPC: C03B37/027 ,  C03B37/029

Abstract: In connection with drawing a fiber in a drawing portion of a drawing device having a refractory, oxide component, a method and apparatus provide an environment in the drawing portion that causes active oxidation of a refractory contaminant on a blank. The active oxidation of the refractory contaminant causes it to corrode away during drawing.