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:
Sep. 05, 2000
Filed:
Jul. 22, 1997
Applicant:
Inventors:
Tomas Brenner, Severna Park, MD (US);
Jean-Luc Archambault, Severna Park, MD (US);
Assignee:
CIENA Corporation, Linthicum, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; H04B / ;
U.S. Cl.
CPC ...
372102 ; 372 20 ; 372 28 ; 372-6 ; 385 37 ; 359182 ;
Abstract
In accordance with the present invention, an in-line fiber Bragg grating is coupled to the output of a directly modulated DFB laser. The grating preferably rejects chirp induced frequencies of light emitted by the DFB laser. Accordingly, light transmitted through the grating is spectrally narrowed and has a higher extinction ratio, thereby decreasing bit error rate probabilities.