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:
Oct. 24, 2000
Filed:
Apr. 10, 1998
Applicant:
Inventors:
Stanislav I Ionov, Calabasas, CA (US);
Dennis C Jones, Malibu, CA (US);
Assignee:
Hughes Electronics Corporation, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ; G02B / ;
U.S. Cl.
CPC ...
372-6 ; 372-6 ; 372 18 ; 385 31 ;
Abstract
A Yb-doped fiber laser uses a homogeneously-broadened material. The disclosed laser design is particularly advantageous for operating the fiber laser between 970-980 nm and using this output as a pump for an Er-doped fiber amplifier (EDFA) having an absorption band between 970-990 nm. Using a homogeneously-broadened host glass, for example alumino-germano-silicate or fluoride glass, significantly reduces the inefficiency that can result from the three-level nature of Yb-doped fiber laser transitions that are required for operating it at approximately 976 nm.