yzed.workscaleandhighconstructioncostofdatacenter,weproposeacost-work,whichiscalledCell-Tree.Cell-binestheadvantagesofelectricalswitchingandopticalswitching,workcards.WealsodesignashortestpathroutingalgorithmforCell-workstructure.ThesimulationresultsshowthatCell-worklatencyandthroughputperformanceandcansignificantlyreducetheequipmentcost.putingenvironment,whichiscalledOIT.OITadoptslowradixAWGRstoconnectserverrackstoformclusterstructures,thenusesfiberstoconnectAWGRsindifferentclusters.ThesefeaturesenableOITtohavehighbisectionbandwidthandmultipathcharacteristic.worklatencyandthroughputperformance.TheanalysisalsoprovesthatOITsupportsdifferenttrafficpatternsandhassmallequipmentcost.putingera.Keywords:puting,DataCenter,OpticalInterconnection,workSimulationTypeofDissertation:AppliedBasicResearch