Aspects and techniques of the present disclosure relate to an alignment device that includes a groove-type alignment structure with a support region for receiving an optical fiber inserted along a fiber insertion axis. The optical fiber has a first side and a second, opposite side. The groove-type alignment structure engages the first side of the optical fiber. The alignment device includes a stabilization structure that engages the first side of the optical fiber and a first angled transition surface that engages the second, opposite side of the optical fiber. The present disclosure also relates to an alignment system that includes a first housing piece; a second housing piece adapted to mate with the first housing piece; and a flat structure positioned between the first and second housing pieces.