Method and system for operating a plurality of electronic variable optical attenuators (eVOAs)
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United States of America Patent
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Feb 7, 2006
Grant Date -
Jun 10, 2004
app pub date -
Jul 15, 2003
filing date -
Dec 5, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for operating a plurality of eVOAs in an optical network is provided. The system comprises a number of eVOAs, each eVOA coupled to one or more optical taps and connected to a microcontroller. The microcontroller comprises a monitor signal processing controller for measuring the power of the optical signal at the eVOAs; a scheduler for continuously cycling and checking the eVOAs operating attenuations; a microprocessing controller for determining, setting, adjusting and updating the eVOA operating attenuation and a means for communications between the microprocessor and the other controller within the system. The microcontroller cycles through the plurality of eVOAs and controls one eVOA at a time according to a predetermined method of the eVOA operation. Individual eVOAs may be controlled according to the same or different methods of controlling operations thereof as required.
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