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. 09, 2003
Filed:
Nov. 18, 1999
Applicant:
Inventors:
Riccardo Calvani, Pino Torinese, IT;
Francesco Cisternino, Turin, IT;
Raffaele Girardi, Mondovi, IT;
Emilio Riccardi, Turin, IT;
Assignee:
Agilent Technologies, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/408 ;
U.S. Cl.
CPC ...
H04J 1/408 ;
Abstract
This invention concerns a method of and a device for optical demultiplexing that are based on the four wave mixing between the signals to be demultiplexed and pump signals. The two signals are fed into a polarization maintaining fiber ( ), which divides them into two components with orthogonal polarization, separated in time; and the four wave mixing is performed separately on the two components, thereby originating two separate signals that are polarization-rotated and re-combined. (FIG. ).