Kappe, F.F.KappeBornholdt, C.C.BornholdtNolting, H.-P.H.-P.NoltingReier, F.F.ReierStenzel, R.R.StenzelVenghaus, H.H.VenghausWeinert, C.M.C.M.Weinert2022-03-082022-03-081990https://publica.fraunhofer.de/handle/publica/318124The authors have realized a novel filter in GaInAsP/InP, which is a codirectional asymmetric coupler with periodic variation of the coupling constant. The transmission exhibits a sinc2-dependence, which offers particularly low crosstalk in combination with weighted coupling.encrosstalkgallium arsenidegallium compoundsiii-v semiconductorsindium compoundsintegrated opticsmultiplexing equipmentoptical communication equipmentoptical couplersoptical filtersmeander couplerrib waveguide technologyfiltercodirectional asymmetric couplerperiodic variationcoupling constantGaInAsP-InP621conference paper