Optical transmission systems including optical amplifiers and methods
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United States of America Patent
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Aug 24, 2004
Grant Date -
Oct 11, 2001
app pub date -
Mar 2, 2001
filing date -
Mar 3, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Optical transmission systems of the present invention include at least one optical amplifier generally including an optical signal amplifying medium supplied with pump power in the form of optical energy in via an optical pump source. The pump source includes multiple optical sources, at least two of which provide optical energy in first and second wavelength ranges separated by a frequency difference. The amplifier includes a wavelength controller configured to adjust the wavelength range of at least one of the optical sources to vary the frequency difference in a manner sufficient to vary optical intensity noise produced when the optical energy from the multiple optical sources is combined.
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