Title:
AUTOMATED OPTICAL LINK POWER CONTROL
Document Type and Number:
WIPO Patent Application WO2007005324
Kind Code:
B1
Abstract:
A system, apparatus and method are described for controlling the gain across one or more amplifier nodes within an optical span. In one embodiment, a fast local amplifier constant gain control loop is provided that maintains a constant gain across an amplifier node for each of the channels within an optical signal. A slow link level gain setting control loop is provided to set and/or adjust the target gain on the amplifier node(s). A gain adjust sequence is performed by the slow link level gain setting control loop to adjust the target gain(s) in response to various events and mechanisms. A "time of flight" protection method is also provided to ensure consistency between the fast local amplifier gain control loop and the slow link level gain setting control loop.
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Inventors:
MITCHELL MATTHEW L (US)
TAYLOR ROBERT B (US)
SPRAGUE EDWARD E (US)
TAYLOR ROBERT B (US)
SPRAGUE EDWARD E (US)
Application Number:
PCT/US2006/024358
Publication Date:
May 31, 2007
Filing Date:
June 23, 2006
Export Citation:
Assignee:
INFINERA CORP (US)
MITCHELL MATTHEW L (US)
TAYLOR ROBERT B (US)
SPRAGUE EDWARD E (US)
MITCHELL MATTHEW L (US)
TAYLOR ROBERT B (US)
SPRAGUE EDWARD E (US)
International Classes:
H04B10/17; H04B10/29
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