Raman amplifier and raman pumping method
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United States of America Patent
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Jun 12, 2007
Grant Date -
Jun 9, 2005
app pub date -
Apr 28, 2004
filing date -
Oct 8, 2003
priority date (Note) -
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Abstract
Provided are a Raman amplifier and a Raman pumping method. A light source unit outputs a pumping light having a wavelength that periodically changes. A light intensity control unit varies a light intensity of the pumping light using the pumping light to improve the gain flatness of a Raman gain. A control unit directs the light intensity control unit to control the light intensity of the pumping light in synchronization with changes in the wavelength of the pumping light.
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