Method of pump wavelength combing for enhanced power dynamic range and redundancy broad band raman optical amplifier system
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United States of America Patent
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Issued Date -
Nov 14, 2002
app pub date -
Apr 20, 2001
filing date -
Apr 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical amplifier having redundancy and a dynamic range of pump power is provided. The amplifier contains a plurality of optical pump sources which are adapted to emit a plurality of pumps. The amplifier also contains a P.times.V coupler containing P inputs and V outputs, which is adapted to receive the pumps and to output V pump profiles, where P and V are positive integers >1 and P=V or P.noteq.V. The pump profiles include a first set of pumps having a first set of wavelengths and having a first power and a second set of pumps having a second set of wavelengths different from the first set of wavelengths and having a second power different than the first power. The amplifier optionally contains at least one spare optical pump source which is adapted to be turned off during operation of the amplifier unless at least one of the plurality of optical pump sources becomes non operational during the operation of the amplifier.
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