Abstract

与典型的低折射率七沟道辅助的七芯光纤相比,本文提出的低折射率沟槽与圆棒辅助的多芯光纤将外围的沟道换成圆棒,由于圆棒比沟道的尺寸更小,低折射率结构对于纤芯模式的束缚能力更弱,所以纤芯的高次模的光缆截至波长更短,更容易控制在C+L波段的下限—1530nm以下

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