Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2006-02-28
2006-02-28
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S341400
Reexamination Certificate
active
07006282
ABSTRACT:
A method and system for controlling the gain of the amplification of an optical signal is provided that includes both electrical feedforward and feedback. In a feedforward portion of an optical amplifier, the method includes receiving an optical signal and measuring an input power. Based on the measured input power and a desired gain, a feedforward pump power is determined. The pump power is adjusted based on the determined pump power. In a feedback portion of an optical amplifier, an output power is measured and gain is determined based on the output power and the measured input power. The measured gain is compared to a desired gain and the pump power is adjusted based on that comparison.
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Kinoshita Susumu
Rodriguez Joseph R.
Tian Cechan
Baker & Botts L.L.P.
Fujitsu Limited
Hellner Mark
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