Alberucci, A.A.AlberucciJisha, C.P.C.P.JishaNolte, S.S.Nolte2022-03-142022-03-142018https://publica.fraunhofer.de/handle/publica/40630510.1364/FIO.2018.JW4A.76We use an effective photonic potential to describe light confinement of TM waves in sub-wavelength structures, such as GRIN and slot waveguides. The predictions of the model are confirmed by FDTD simulations.en620conference paper