Corning O.t.i. Spa

Paolo Gurnari

Fabrizio Di Pasquale

Giovanni Sacchi

Paolo Vavassori

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 ( ).

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Cesano Maderno, Italy

Paolo Gurnari