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:
Dec. 15, 1998
Filed:
Apr. 15, 1997
Applicant:
Inventors:
James W Fleming, Westfield, NJ (US);
Michael L Pearsall, Alpharetta, GA (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385123 ; 385141 ; 385124 ; 65385 ;
Abstract
A refractory body having reduced optical attenuation, and a method for making same, is disclosed. A refractory body is exposed to a high-temperature oxygen-containing plasma. A drawing force is applied to the body, elongating the body to form a rod of reduced diameter. The source of the plasma is moved in a direction opposite to the applied drawing force, and, preferably, has a reciprocating component of motion to spread the zone of heating. The method is particularly useful in manufacturing optical fiber core rods having low optical attenuation.