Amplified telecommunication system for wavelength-division multiplexing transmissions
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United States of America Patent
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May 5, 1998
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N/A
app pub date -
Jan 29, 1997
filing date -
Apr 14, 1994
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Expired
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Abstract
The present invention relates to an optical amplifier and a telecommunication system including a plurality of the optical amplifiers connected in cascade, particularly adapted for a wavelength division multiplexing transmission, in which a combination of dopants in the active fiber core of the optical amplifiers enables a high signal/noise ratio to be achieved for all channels in a predetermined wavelength band, even in the presence of several simultaneously fed signals.
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