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. 21, 2003
Filed:
Nov. 06, 2001
Applicant:
Inventors:
Nobuyuki Kagi, Tokyo, JP;
Koji Yamanaka, Tokyo, JP;
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/00 ;
U.S. Cl.
CPC ...
H01S 3/00 ;
Abstract
An optical amplification apparatus estimates a gain deviation over a range of multiplex wavelength of a signal light received from an EDFA in the preceding stage, selects a gain profile, with which the gain deviation becomes a minimum, from a gain profile storage section, and determines the gain profile. This optical amplification apparatus further controls an HPU (High power pumping light source) according to the determined gain profile and performs Raman amplification on the received signal light.
Kagi, Nobuyuki. (2003). Optical amplification apparatus and optical transmission system (U.S. Patent No. 6636659). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6636659
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile