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:
Aug. 07, 2001
Filed:
May. 25, 1999
Applicant:
Inventors:
Jean-Yves Emery, Palaiseau, FR;
Fabienne Gaborit, Limours, FR;
Christopher Janz, Issy-les-Moulineaux, FR;
François Dorgeuille, Paris, FR;
Béatrice Dagens, Paris, FR;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/35 ; H01S 3/00 ; H01S 5/00 ;
U.S. Cl.
CPC ...
G02F 1/35 ; H01S 3/00 ; H01S 5/00 ;
Abstract
An active structure in the semiconductor die of an amplifier or converter includes a plurality of stacked active layers with different compositions. The different compositions lead to a spectral offset between the respective gain bands of the layers which widens the gain band of the amplifier or the optical bandwidth of the converter. Applications include fiber optic telecommunication networks.