AnewpolymercompositethinfilmDMACB/PEK-cisreported.Afterpolingofthefilm,therefractiveindicesntandnn,thatisthein-film-planeandthenormal-to-film-planerefractiveindicesat633nmandthethicknessdweredeterminedusingthequasi-waveguidem-linemethod.Theresultsofmeasurementandcalculationare:nt=1.6573±0.0017,nn=1.6278±0.0019,andd=1.4278±0.0031μm.