Arnous, A.H.Ekici, M.Moshokoa, S.P.Ullah, M. ZakaBiswa, A.Belic., M.2024-11-152024-11-152017-03-230587-4254 (P)1509-5770 (E)http://dx.doi.org/10.12693/APhysPolA.132.1399https://10.1007/s11071-016-3052-2https://hdl.handle.net/20.500.14519/1074This paper obtains soliton solutions to nonlinear directional couplers in optical metamaterials by the aid of trial function method. Three types of couplers are studied. Four forms of nonlinearity are considered. Bright, dark, and singular soliton solutions are retrieved. These soliton solutions appear with certain constraint conditions that guarantee their existence.427–458 PagesenAttribution-NonCommercial-ShareAlike 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/SolitonsNonlinearOptical metamaterialsArticle