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. 21, 2006
Filed:
Aug. 08, 2003
Guy Balland, Ste Genevieve des Bois, FR;
Alice Michaud, Paris, FR;
Emmanuel Rossi, Paris, FR;
Frank Bruyere, Paris, FR;
Jacques Pochet, Bretigny sur Orge, FR;
Christophe Trouiller, Montrouge, FR;
Guy Balland, Ste Genevieve des Bois, FR;
Alice Michaud, Paris, FR;
Emmanuel Rossi, Paris, FR;
Frank Bruyere, Paris, FR;
Jacques Pochet, Bretigny sur Orge, FR;
Christophe Trouiller, Montrouge, FR;
Alcatel, Paris, FR;
Abstract
A method of automatic gain control for use in an optical amplification device comprising a variable optical attenuator and an optical amplifier connected downstream of the optical attenuator includes the steps of measuring the power at the input of the amplification device, determining the number of channels at the input of the amplification device as a function of the measured power knowing the attenuation value of a span upstream of the device, and modifying the gain of the amplifier as a function of the number of channels determined in this way.