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:
May. 01, 2001
Filed:
Jun. 05, 1998
Applicant:
Inventor:
Christian Hentschel, Gaufelden, DE;
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/008 ; H01S 3/08 ;
U.S. Cl.
CPC ...
H04B 1/008 ; H01S 3/08 ;
Abstract
Described is a noise figure measurement for optical amplifiers by disabling a signal of a channel before the measurement of the amplified spontaneous emission for that channel and by distributing a power equivalent which is substantially equal to the power of the signal of the disabled channel, at at least one other wavelength. The noise figure measurement can be used as well in multi-channel applications such as WDM, as in a single channel operation.