Few-mode multicore fibers for long-haul transmission line

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Few-mode multicore fibers (FM-MCFs) that enable dense space-division multiplexing (DSDM) have the potential to drastically improve the fiber capacity. In designing the FM-MCFs, several issues that originate from multicore fibers and few-mode fibers must be considered. In this paper, these design issues such as inter-core crosstalk (IC-XT) and dispersion mode delay (DMD) are discussed. A three-mode 12-core fiber with low-DMD low-IC-XT achieves long-haul DSDM transmission over 500 km. The design concept, fiber design, and characteristics of the fabricated three-mode 12-core fiber are also described.




Sasaki, Y., Takenaga, K., Matsuo, S., Aikawa, K., & Saitoh, K. (2017). Few-mode multicore fibers for long-haul transmission line. Optical Fiber Technology, 35, 19–27. https://doi.org/10.1016/j.yofte.2016.09.017

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