Design of Multicore Fiber Having Upgradability From Standard Single-Mode Fibers and Its Application

In this paper, multicore fiber (MCF), which is compatible with standard conventional single-mode fibers (SMFs), is summarized. Conventional SMF systems can be upgraded to space-division multiplexing systems by this MCF with migration scenario. As applications of this, connectivity of this MCF and MCF cable with ultra-high-capacity is described. Transmission experiment using 400 Gb/s signals are confirmed with this MCF.