An expanded-beam connector comprising a sleeve for holding at least one fiber and one lens body, the sleeve having an interior surface having a certain geometry, a fiber having a fiber end face, and a lens body, the lens body being formed with a first face and a second face, the first and second faces being substantially planar, the first face having an interface point for optically coupling with the fiber end face, the second face having a convex surface, the interface point and the convex surface being optically coupled through the lens body, the lens body having an outer periphery at least a portion of which has the certain geometry such that the lens body is held in a precise radial position relative to the sleeve when disposed in the sleeve.