Methods and systems to stabilize an optical network against...

Details Methods and systems to stabilize an optical network against... Methods and systems to stabilize an optical network against...

2011-01-18

2011-01-18

Tran, Dzung D (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S018000, C398S038000

Reexamination Certificate

active

07873274

ABSTRACT:
The present invention provides methods and systems to stabilize an optical network against nodal gain changes through two nested control loops for controlling node gain and node output power. The present invention includes two nested control-loops running at different update speeds including: an inner, faster, control-loop which sets the gains and losses within a node to achieve a node-gain target, and a node-gain target for the inner loop is set by an outer, slower, control loop that whose target is the node output power. Advantageously, the present invention reduces the problem of concatenated overshoot by minimizing the control-loop response to events that occur at other nodes.

REFERENCES:
patent: 2004/0086274 (2004-05-01), Wan et al.
patent: 2004/0156095 (2004-08-01), Tsuzaki et al.
patent: 2005/0146782 (2005-07-01), Takeyama et al.
patent: 2006/0203329 (2006-09-01), Nishihara et al.
patent: 2009/0116841 (2009-05-01), Yang et al.

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