OPTICAL AMPLIFIERS
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United States of America Patent
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Issued Date -
May 16, 2013
app pub date -
May 11, 2011
filing date -
May 13, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical amplifier system is provided which comprises first and second optical amplifiers (1, 2) for amplifying optical signals in a fibre optic communications link and a common pump (3) for optically pumping both the first amplifier (1) and the second amplifier (2) to effect such amplification. There is also provided an optical switch (6) for providing an optical path between the pump and the first amplifier in a first switching state and an optical path between the pump and the second amplifier in a second switching state to enable pumping of the first and second amplifiers by the pump sequentially. Advantageously this arrangement provides high accuracy to the outputs (4, 5) of the pump (3) and reduces low power pump noise.
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