简介：Weproposeanultra-simpledual-channelconfigurationforsimultaneouslyevaluatingtwobranchesofamultifunctionalintegratedopticchip(MFIOC).Intheconfiguration,theMFIOCisemployedasabeamsplittertoconstructthedemodulationinterferometertogetherwitha2×2fibercoupler.InterferencehappensbetweenpolarizationmodestravelingthroughdifferentchannelsoftheMFIOC.Thecross-couplingsofeachchannelarerespectivelycharacterizedbytheinterferencepeakswhichdistributeonoppositesidesofthecentralinterferencepeak.TemperatureresponsesoftheMFIOCareexperimentallymeasuredfrom-40°Cto80°C.Resultsshowthattheproposedconfigurationcanachievesimultaneousdual-channeltransientmeasurementswithresolutionof-90dBanddynamicrangeof90dB.Inaddition,thetwochannelsoftheconfigurationhaveconsistentmeasuringperformance,andthetwobranchesoftheMFIOChavedifferentresponsestotemperaturevariation.