Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 24, 2007
Patent Application Number
10686670
Date Filed
October 17, 2003
Patent Primary Examiner
Patent abstract
An optical wavelength multiplexing apparatus is capable of controlling an attenuation amount of a variable optical attenuator at high speed, thereby preventing an optical level change generated by an upstream WDM section from flowing into a downstream WDM section.
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