An optical coupling device includes a multi-core fiber alignment station, a single-mode fiber alignment station, and a furcation lens assembly. The multi-core fiber alignment station and single-mode fiber alignment station include alignment hardware configured to position optical fibers at fixed positions relative to an optical axis of the furcation lens assembly. The furcation lens assembly includes a furcating and projecting axicon surfaces that are rotationally invariant and are configured such that optical modes of an optical fiber aligned in one of the fiber alignment stations are spatially separated and substantially telecentrically mapped to corresponding optical modes of optical fibers aligned in the other fiber alignment station.