Gehler, J.J.GehlerRottschalk, M.M.RottschalkRasch, A.A.RaschBräuer, A.A.BräuerWächter, C.C.WächterKarthe, W.W.Karthe2022-03-092022-03-091995https://publica.fraunhofer.de/handle/publica/323966Antiresonant reflecting optical waveguides (ARROWs) in KTiOPO4 (KTP) were designed and fabricated by e-beam direct writing and double rubidium<->potassium ion exchange. Theoretical ARROW-mode field distributions calculated by the finite element method, the refractive index profiles of the reflectors and the waveguide layer, and measured nearfield distributions are presented.enarrowion exchangeIonenaustauschKTPoptical waveguidesoptische Wellenleiter620conference paper