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本文研究了凹陷内包层型光纤与突变型光纤的基模场分布。计算表明,对于实际凹陷内包层型光纤,由于内包层直径26与纤芯直径2a之比较大,基模场分布与相应的突变型光纤的基模场分布基本一致。
In this paper, the fundamental mode field distributions of the depressed inner cladding optical fiber and the abrupt optical fiber are studied. The calculation shows that the fundamental mode field distribution of the actual depressed inner cladding fiber is basically the same as that of the corresponding mutant optical fiber due to the large ratio of the inner cladding diameter 26 to the core diameter 2a.