Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2005-08-09
2005-08-09
Gregory, Bernarr E. (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S337400
Reexamination Certificate
active
06927897
ABSTRACT:
A method of amplifying a signal light includes initially multiplexing a signal light and a pumping light, initially amplifying the signal light initially demultiplexing so as to separately output the amplified signal light and the pumping light, and modifying a waveform of the amplified signal light so as to compensate for waveform distortion of the signal light along a transmission path of the signal light and providing an output of a waveform modified signal light. Thereafter, the waveform modified signal lights is secondarily multiplexed, secondarily amplified, and secondarily demultiplexed with a waveform of amplified signal light being compensated for waveform distortion of the signal light along a transmission path of the signal light and providing an output of a waveform modified signal light.
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Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Hughes Deandra M.
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