Control Design for Transient Power and Spectral Control in

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1、ControlDesignforTransientPowerandSpectralControlinOpticalCommunicationNetworks1LacraPavelUniversityofToronto,ECEDepartment10King’sCollegeRd.,Toronto,M5S3G4,CanadaPhone:416-946-8662,Fax:416-978-0804pavel@control.toronto.edutransientgaincontrolatopticalamplif

2、iersites.Weproposetwocontrolschemes:basedonfeedbackonlyAbstract:Thispaperpresentscontrolapplicationsandbasedonacombinationoffeedbackandtopowercontrolinopticalcommunicationfeedforwardcompensation.Theperformanceofthenetworks.Weconsidertransientpowercontroltwo

3、controlschemesiscomparedforanopticallinkacrossopticalcommunicationlinks,andspectralwith50-cascadedopticalamplifiers.Then,wepowercontrolatcompositeopticalamplifiersites.considerspectralpowercontrolatcompositeAdecentralizednetworkcontrolstrategyisdynamicampli

4、fiersites.Acontrolstrategybasedonproposedthatensuresrobusthandlingofdynamicdecouplingthecontrolloopsbyusingtime-constantnetworkreconfiguration,withminimizationoflayeringispresented,andtwomethodsforhandlingopticalpowertransientexcursionsacrossdynamicchannelc

5、ountcasesarediscussed.network.WepresentcontrolsystemdesignExperimentalresultsatadynamicamplifiersiteareaspectsaswellasexperimentalresultsbasedonanpresented,basedondigitalimplementationoftheactualimplementedcase.proposedcontrollers.2.OPTICALSYSTEMDESCRIPTION

6、1.INTRODUCTIONWeconsideraWDMopticalsystem(Fig.1)withNchannelsmultiplexedinthewavelengthdomainInthispaperwepresentapplicationsofcontrolbeingtransmittedonasingleopticalfiber.systemdesigntoopticalcommunicationnetworks.Thisapplicationareaismotivatedbytheevoluti

7、onofwavelengthdivisionmultiplexed(WDM)opticall1Fiberspanl1communicationsfromstaticallydesigned,point-to-Tx~100kmRxpointopticallinkstowardsreconfigurableopticalll22Rxnetworks.ControlandmanagementofthesehighlyTxcomplexnetworksrepresentsoneofthemajordesignllNN

8、challenges,[1].DynamicsaspectsinopticalnetworksRxTxhavestartedtobeconsideredveryrecently,[2]-[4].OpticalAflexiblestrategyforcontrolofopticalpowerisAmplifieressentialinreconfigurableopticalcommunication