S+ band nonlinear polarization amplifiers
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United States of America Patent
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Jul 29, 2003
Grant Date -
Dec 6, 2001
app pub date -
Jan 19, 2001
filing date -
Mar 24, 1998
priority date (Note) -
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Abstract
An amplified broadband optical signal is produced in a transmission system. An optical signal is divided into a first beam and a second beam. The first beam has a wavelength less than a predetermined wavelength. The second beam has a wavelength greater than the predetermined wavelength. The first beam is directed to a transmission link in the transmission system. The transmission system includes a distributed Raman amplifier. The distributed Raman amplifier operates in the wavelength range less than 1480 nm. The second beam is directed to a second amplifier. The first and second beams are combined. An amplified broadband optical signal is produced.
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