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:
Sep. 28, 1982
Filed:
Dec. 12, 1980
Applicant:
Inventor:
Robert Olshansky, Natick, MA (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ; C03C / ;
U.S. Cl.
CPC ...
65-312 ; 65-313 ; 65-32 ; 65 13 ;
Abstract
A method of inexpensively forming low-loss optical waveguide fibers having high strength. A draw blank comprising a core region surrounded by a thin layer of cladding glass is formed by a CVD technique. The blank is drawn into a preliminary fiber which passes through a double crucible arrangement whereby a tension layer is applied to the thin coating layer of the preliminary fiber and a compression layer is formed on the surface of the tension layer. The expansion coefficient of the tension layer is much greater than that of the core glass, and the expansion coefficient of the compression layer is lower than that of the tension layer.