Layout Optimization in Multi-core Optical Fibers

Space-division multiplexing (SDM) is regarded as a promising solution for the capacity crunch looming just around the corner. The exponential growth of network traffic that has us gravitating towards this crunch has created the need for high-capacity optical transmission systems, which is where homogeneous single-mode multi-core fibers (SM-MCF) step into the scene. A method for the estimation of crosstalk inside a MCF is introduced, along with several layouts that seek to minimize the inter-core crosstalk (XT) amongst the cores. A method for choosing the best layout for the cores on a given MCF is devised and three fibers differing only in cladding diameter (Cd= 125,260,300 µm) are analysed.