Regulating radiation component power in wavelength division multiplexed optical communication systems
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United States of America Patent
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Nov 4, 2008
Grant Date -
Jun 17, 2004
app pub date -
Feb 12, 2002
filing date -
Feb 17, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided a method of, and apparatus for, regulating radiation component (wavelength channel) power in a wavelength division multiplexed (WDM) optical communications system (10). The system (10) comprises a plurality of nodes (20) interconnected through optical waveguides (30, 40) (optical fibers). The method is characterised by: passing one or more tokens (300) around the system from node to node; adjusting nodal settings (150, 170), such as optical attenuation, applied at each node to regulate the power of WDM radiation components at the node in response to receiving one or more tokens; and repeating the method until WDM radiation component power within the system is substantially regulated.
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