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. 30, 1993
Filed:
Nov. 08, 1991
Matthew J Andrejco, Clinton, NJ (US);
Brian G Bagley, Watchung, NJ (US);
Bell Communications Research, Inc., Livingston, NJ (US);
Abstract
A method of forming an optical fiber. A solution (12) is prepared in which are dissolved both a ladder siloxane and one or more dopants which are to be incorporated into the final silica or silicate glass. The solution is drawn into the interior of a silica tube (10) and is left as a coating (26) on the inside wall. The solvent is evaporated, and the rigid coating is cured at 150.degree. C. The filling and curing process may be repeated for multiple layers. The cured coating is then oxidized and fused into doped silica. The resultant tube preform is collapsed and drawn into a fiber. The method allows the introduction of nearly arbitrary constituents into the silica, including glass-forming elements and low-level dopants. The core-cladding interface is improved if a layer of glass-forming soot particles (28) is first deposited and the liquid is soaked into and over the soot.