Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1990-09-28
1991-05-21
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
455611, 370 3, H01S 306, H01S 313
Patent
active
050178857
ABSTRACT:
An improved optical amplifier is disclosed with reduced signal-induced, deleterious, nonlinear effects, such as crosstalk, inter-modulation distortion and other saturation-induced effects. The invention comprises an optical amplifier with a compensation loop, such as a feed-forward or a feed-backward loop. This loop provides additional pumping to the gain medium associated with the amplifier, thereby compensating for what would otherwise be deleterious, signal-induced variations in the gain of the optical amplifier.
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AT&T Bell Laboratories
Dworetsky Samuel H.
Moskowitz Nelson
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