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:
Mar. 09, 2004
Filed:
Jan. 16, 2002
Richard Neuhauser, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A pumping source with a number of regulated pump lasers for broadband optical amplification of a WDM signal is provided, wherein, the powers of the pump lasers that exhibit different wavelengths are regulated such that all the channels of a WDM signal exhibit a flat profile of their levels at the end of the transmission fiber and in the event of a defect and, particularly, in the event of a failure or a partial failure of the pump lasers, the corresponding change in the gain profile is automatically compensated for by a supervisory regulation device for resetting the pumping powers in the event of a failure report, thereby resulting in a minimal change in the gain spectrum of all the channel levels of a WDM signal in the event of defective operation of the pumping source.