简介:Wereviewcurrentsiliconphotonicdevicesandtheirperformanceinconnectionwithenergyconsumption.Fourcriticalissuesareidentifiedtolowerenergyconsumptionindevicesandsystems:reducingtheinfluenceofthethermo-opticeffect,increasingthewall-plugefficiencyoflasersonsilicon,optimizingenergyperformanceofmodulators,andenhancingthesensitivityofphotodetectors.Majorconclusionsare(1)Mach–Zehnderinterferometer-baseddevicescanachieveathermalperformancewithoutanyextraenergyconsumptionwhilemicroringsdonothaveanefficientpassiveathermalsolution;(2)whiledirectbondedIII–V-basedSilaserscanmeetsystempowerrequirementfornow,hetero-epitaxialgrownIII–Vquantumdotlasersarecompetitiveandmaybeabetteroptionforthefuture;(3)resonantmodulators,especiallycouplingmodulators,arepromisingforlow-energyconsumptionoperationevenwhenthepowertostabilizetheiroperationisincluded;(4)benefitingfromhighsensitivityandlowcost,Ge/Siavalanchephotodiodeisthemostpromisingphotodetectorandcanbeusedtoeffectivelyreducetheopticallinkpowerbudget.Theseanalysesandsolutionswillcontributetofurtherloweringenergyconsumptiontomeetaggressiveenergydemandsinfuturesystems.