Optical amplifier
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United States of America Patent
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Nov 3, 1998
Grant Date -
N/A
app pub date -
May 1, 1995
filing date -
May 6, 1994
priority date (Note) -
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Abstract
An optical amplifier includes a first multiplexing/demultiplexing unit for multiplexing or demultiplexing a signal light and a pumping light, a first optical amplifying medium coupled to the first multiplexing/demultiplexing unit for amplifying the signal light, a second multiplexing/demultiplexing unit coupled to the first optical amplifying medium for multiplexing or demultiplexing the signal light and the pumping light, a light signal characteristic compensation unit coupled to the second multiplexing/demultiplexing unit for compensating a characteristic of the signal light, and a second optical amplifying medium coupled to the second multiplexing/demultiplexing unit for amplifying the signal light.
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