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:
Jul. 29, 2003
Filed:
Jan. 23, 2001
Applicant:
Inventors:
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/15 ; C03C 3/95 ; C03C 1/304 ; C03C 3/062 ; C03C 3/068 ; H04B 1/012 ; H01S 3/00 ;
U.S. Cl.
CPC ...
C03C 3/15 ; C03C 3/95 ; C03C 1/304 ; C03C 3/062 ; C03C 3/068 ; H04B 1/012 ; H01S 3/00 ;
Abstract
An optical amplifier glass comprising a matrix glass containing Bi O and at least one of Al O and Ga O , and Er doped to the matrix glass, wherein from 0.01 to 10% by mass percentage of Er is doped to the matrix glass which has a total content of Al O and Ga O of at least 0.1 mol %, a content of Bi O of at least 20 mol %, a refractive index of at least 1.8 at a wavelength of 1.55 &mgr;m, a glass transition temperature of at least 360° C. and an optical basicity of at most 0.49.