Pumping light source drive system for an optical amplifier
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United States of America Patent
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Aug 11, 1992
Grant Date -
N/A
app pub date -
Apr 4, 1991
filing date -
Jul 5, 1990
priority date (Note) -
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Abstract
A pumping light source drive system is disclosed for driving pumping light sources of an optical amplifier which is composed of a rare earth doped optical fiber doped with a rare earth element and said pumping light sources. The pumping light sources are always held in operation. The output signal power at the output of the rare earth doped optical fiber or the combined power of the pumping light sources is detected and compared with a predetermined reference power to control the output power of the pumping light sources, so that the output signal power or the combined power of the pumping light sources reaches a predetermined value.
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