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:
Nov. 16, 2004
Filed:
Oct. 07, 2002
Applicant:
Inventors:
Seiki Ohara, Yokohama, JP;
Hideaki Hayashi, Yokohama, JP;
Naoki Sugimoto, Yokohama, JP;
Katsuhiro Ochiai, Yokohama, JP;
Yasuji Fukasawa, Yokohama, JP;
Takeshi Hirose, Yokohama, JP;
Manuel Reyes, Yokohama, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 ;
U.S. Cl.
CPC ...
G02B 6/02 ;
Abstract
An optical amplifying glass comprising 100 parts by mass of a matrix glass and from 0.1 to 10 parts by mass of Er doped to the matrix glass, wherein the matrix glass comprises Bi O , at least one of B O and SiO , at least one member selected from the group consisting of Ga O , WO and TeO , and La O in such a ratio that Bi O is from 20 to 80 mol %, B O +SiO is from 5 to 75 mol %, Ga O +WO +TeO is from 0.1 to 35 mol %, and La O is from 0.01 to 15 mol %.