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. 08, 2009
Filed:
May. 12, 2003
Dag Bonnedal, Enskede, SE;
Bengt Johansson, Hagersten, SE;
Stefano Piciaccia, Milan, IT;
Fransisco Martinez, Oggiono, IT;
Dag Bonnedal, Enskede, SE;
Bengt Johansson, Hagersten, SE;
Stefano Piciaccia, Milan, IT;
Fransisco Martinez, Oggiono, IT;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Information about optical amplifier ASE power is propagated down a link. Each amplifier along the link can learn of the ASE power at its input and take this input ASE power into account in controlling its own per channel output power. Each amplifier can also pass along to the next amplifier an indicator that represents its output ASE power taking into account both its input ASE power and own generated ASE power. Intermediate optical add/drop multiplexers (OADMs) adjust the ASE power indicator to account for losses and the spectral characteristics of each filter.