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. 03, 2002
Filed:
Jun. 20, 2000
Applicant:
Inventors:
Suhas Bhandarkar, Glen Gardner, NJ (US);
Frank J McNally, Princeton, NJ (US);
Thomas M Putvinski, Scotch Plains, NJ (US);
Assignee:
Fitel USA Corp., Norcross, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7016 ;
U.S. Cl.
CPC ...
C03B 3/7016 ;
Abstract
A sol-gel process for fabricating bulk, germanium-doped silica bodies useful for a variety of applications, including core rods, substrate tubes, immediate overcladding, pumped fiber lasers, and planar waveguides, is provided. The process involves the steps of providing a dispersion of silica particles in an aqueous quaternary ammonium germanate solution—typically tetramethylammonium germanate, gelling the dispersion to provide a gel body, and drying, heat treating, and sintering the body to provide the germanium-doped silica glass.