Recent standard developments have brought to light that multimode fiber-optic circuits constructed in groups of 8 are an efficient means of achieving high-speed connections. For example, the IEEE 802.3bm specifications define a 100-Gbit/sec multimode connection via 4 transmit lanes of 25 Gbits/sec and 4 receive lanes of 25 Gbits/sec. The current IEEE 802.3bs project, still in development, is likely to specify 400-Gbit/sec transmission via 16 multimode fibers in each direction.
This trend toward “multiples-of-8” high-speed networking has prompted the development of corresponding fiber-optic connectivity systems. This presentation details the factors that have given rise to 8-fiber connectivity options. It offers a practical discussion of some products and technologies currently available for this type of connectivity, as well as how to implement a fiber-optic infrastructure based on this 8-fiber concept.