Raman amplifier and optical communication system
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United States of America Patent
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Aug 3, 2010
Grant Date -
Jan 17, 2008
app pub date -
Aug 30, 2004
filing date -
Aug 30, 2004
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Abstract
A Raman amplifier includes a pumping light source, an optical coupler, and a Raman amplifier medium. The pumping light source outputs a pumping light that is intensity-modulated with a frequency equal to or higher than 100 megahertz. The optical coupler couples the pumping light with a carrier light. The Raman amplification medium is pumped by the pumping light to amplify the carrier light. The Raman amplification medium has characteristics of a low dispersion and a small difference between propagation times of the carrier light and the pumping light.
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