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. 23, 2003
Filed:
Apr. 19, 2001
Applicant:
Inventors:
Hamid Hatami-Hanza, Ottawa, CA;
Nima Ahmadvand, Ottawa, CA;
Assignee:
Peleton Photonic Systems, Inc., Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/000 ; H01S 3/00 ;
U.S. Cl.
CPC ...
H04B 1/000 ; H01S 3/00 ;
Abstract
An optical amplifier for two adjacent bands of optical data channels provides gain across the entire spectrum, including the so-called dead-band, by splitting the entire input signal equally into two paths. One path is optimized to amplify one band and the other path is optimized to amplify the other. An optical delay in one path, usually the one optimized for the lower wavelength band, ensures equal optical path lengths for the two paths. The amplified signals in that two paths are then combined to yield or flat gain profile across the two bands and the gap in-between.