Steinkopff, AlbrechtAlbrechtSteinkopffAleshire, Christopher E.Christopher E.AleshireKlenke, ArnoArnoKlenkeJauregui, CesarCesarJaureguiNold, JohannesJohannesNoldKuhn, StefanStefanKuhnHaarlammert, NicolettaNicolettaHaarlammertSchreiber, ThomasThomasSchreiberLimpert, JensJensLimpert2023-07-042023-07-042022https://publica.fraunhofer.de/handle/publica/44515710.1364/SOF.2022.SoTh3G.52-s2.0-85146704200We theoretically and experimentally investigate the optical cross-talk between cores of a multicore fiber. We show that the cross-talk not only depends on the numerical aperture and relative distance between the cores but also, crucially, on the size of the cores.enconference paper