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. 04, 2001
Filed:
Jan. 27, 1999
Applicant:
Inventor:
Satoshi Ishii, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 ;
U.S. Cl.
CPC ...
H01S 3/00 ;
Abstract
The present invention relates to a gain equalization unit installed on an optical fiber transmission line with a plurality of lines. The gain equalization unit has gain equalizers and loss generators. The gain equalization unit is installed on at least one line, and the loss generators are installed on at least one line. The gain equalization unit equalizes the powers of channels in a predetermined range of the optical fiber transmission line. The loss generators are installed to make the loss amounts of the lines equal.