简介：Plasmonicwaveguides,asacompetitivecandidate,havebeenwidelystudiedinrapiddevelopingphotonicintegratedcircuits(PICs)andopticalinterconnectionfields.However,crosstalkbetweenplasmonicwaveguidesisacriticalissuethathastobeconsideredinpractice.Actually,crosstalkdominatestheultimateintegrationdensityoftheplanarphotoniccircuits.Thispaperreviewstherecentresearchworkonevaluationmethodsandcrosstalksuppressionapproachesofplasmonicwaveguides.Threecrosstalkevaluationmethodsbasedoncomparisonofspecificparametersofwaveguideshavebeensummarized.Furthermore,fourspecificapproachestoreducecrosstalkhavebeenillustratedastwocategoriesaccordingtotheirimpactsonwaveguideperformancesandthewholecircuit.Onemeansofcrosstalksuppressionischangingtheplacementofwaveguides,whichcouldmaintainthetransmissioncharacteristicsoftheoriginalwaveguide.Theothermeansisinsertingmedium,whichhastheadvantageofoccupyingsmallerspacecomparedtothefirstmethod.Consequently,tosuppresscrosstalkbetweenplasmonicwaveguides,oneshouldchoosesuitableapproach.