Optical Amplifier with Optical Gain-Control
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United States of America Patent
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Issued Date -
Jul 15, 2010
app pub date -
Aug 24, 2006
filing date -
Sep 1, 2005
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Abandoned
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Abstract
An optical amplifier with optical gain-control (OGC) has an input (11) for the signals to be amplified and an output (12) for the amplified signals. It comprises in series a first Bragg grating (BG) (15), a variable optical attenuator (VOA) (17), an optical amplification unit with pump (13) and a second Bragg grating (BG) (14). The two gratings define between them a laser cavity with the amplification unit (13) in the middle and the signals to be amplified are placed at the input of the amplification unit (13) with a splitter (16) at the input of the amplification unit. A network with nodes comprising said amplifiers is also described.
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