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:
Jun. 09, 2009
Filed:
May. 11, 2004
Applicants:
Gunnar Forsberg, Stockholm, SE;
Johan Sandell, Stockholm, SE;
Inventors:
Gunnar Forsberg, Stockholm, SE;
Johan Sandell, Stockholm, SE;
Assignee:
Transmode Systems AB, Hagersten, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for conveying management information in a WDM system from a number of wavelength converters to a central management unit, wherein a management information signal is superimposed on the WDM signal from the respective wavelength converter. A fraction of the optical signal in the common optical transmission line is tapped off to a detector and the different management information signals are recovered by a receiver unit which is connected to the detector. The invention also relates to a WDM system and a pluggable WDM wavelength converter.