Multimode fiber communication system with enhanced bandwidth

This invention relates to optical fiber communication systems and, in particular, to a multimode fiber communication system employing offset pinhole illumination of the multimode fiber for enhanced bandwidth transmission. In accordance with the invention, a multimode optical fiber communication system is provided with offset illumination by disposing an optical pinhole adjacent an end of the multimode fiber core and offset from the center of the core. The pinhole permits direct offset illumination without the difficulty and expense of a conventional patch-cord assembly.