Abstract
Triple-core couplers with asymmetric structure are examined and the mode patterns with arbitrarily mismatched and separated cores are presented. It is found that the mode patterns experience a dramatic change as the symmetry of the structures is perturbed no matter how small a perturbation is.
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Chen, Y. Asymmetric triple-core couplers. Opt Quant Electron 24, 539–553 (1992). https://doi.org/10.1007/BF00619753
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DOI: https://doi.org/10.1007/BF00619753