Fiber optic patch cords come in various colors, aiding in connector type identification. The Black Box OM3 multimode fiber optic Plenum cable is less attenuation when bent or twisted compared with traditional optical fiber cables and this will make the installation and maintenance of the fiber optic cables more efficient. This color coding simplifies the process of recognizing. How to Identify Fibers in High-Count Cables (>12 Fibers) For cables with more than 12 strands (e., 48, 96, or 144 fibers), the industry uses a “Tube and Fiber” system. This early cable has a modal bandwidth of 160 MHz. km @ 850 nm, as opposed to 200 for OM1. What are the different Fiber Optic Cable types? There are basically two main types of fiber optic cable:.