In this paper we deal with the propagation of light in a one dimensional array of coupled cavities which light is localized at the place of phase-jump defect on inter-waveguide coupling parameter resulting a spatial optical soliton. This type of defect may take place in junction of two homologous semi-infinite array, which there is a mismatch in place. Then, by introducing some of various solitons emerges in junction, the optical power carried by each mode and its dependence on wave propagation constant are studied and the cut-off propagation constants are determined for each mode. Finally, the stability of modes against perturbations is specified by numerical stability analysis.