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:
Feb. 11, 2003
Filed:
Feb. 28, 2001
Paolo Vavassori, Bergamo, IT;
Paolo Gurnari, Cesano Maderno, IT;
Giovanni Sacchi, Milan, IT;
Fabrizio Di Pasquale, Milan, IT;
Corning O.T.I. SpA, Milan, IT;
Abstract
An optical transmission system includes an optical transmitting unit ( ) to transmit optical signals in a transmission wavelength band above 1570 nm; an optical receiving unit to receive the optical signals; an optical fiber link optically coupling the transmitting unit to the receiving unit, at least an optical amplifying unit ( ) coupled along the link and adapted to amplify the optical signals; the optical amplifying unit ( ) having an amplification wavelength band including the transmission wavelength band and comprising: an input ( ) for the input of the optical signals, an output ( ) for the output of the optical signals, at least an erbium-doped active fiber ( ) for the amplification of the optical signals, having a first end optically coupled to the input ( ) and a second end optically coupled to the output ( ), a pump source ( ) for generating a pump radiation having a wavelength greater than 1400 nm and lower than 1470 nm, and an optical coupler ( ) optically coupling the pump source ( ) to the active fiber ( ).