Multi-functional optical processor useful for fiberoptic applications
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United States of America Patent
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Jun 25, 2002
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N/A
app pub date -
Mar 3, 2000
filing date -
Mar 3, 2000
priority date (Note) -
Expired
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Abstract
In an optical amplifier, a filter is employed to reflect pump power into an erbium optical fiber carrying an input radiation signal, causing the signal to be amplified. The filter passes the amplified radiation signal to a partially reflecting optical interface which passes a small portion of the amplified radiation signal for monitoring purposes. Most of the amplified radiation signal is reflected by the interface and reflected again by another interface towards an output channel preferably parallel to the input channel for a compact design. Isolators may be employed between the filter and a first partially reflecting interface.
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