Li-Bo Wang, Zhi-dong Shi, Ye Bai, Jian-qiang Lin, Quan Ge
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Influence of cores' shape on coupling length of dual-core fiber
For the same given cores' area in three kinds of dual (circular, elliptical, egg-shaped) core fiber, the relationship of the coupling length with different wavelength is calculated and examined. The influence of the cores' shape and pitch in dual-core fiber on the modal field profile and coupling characteristics is discussed.