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首页> 外文期刊>IEEE Journal of Quantum Electronics >Full-vectorial imaginary-distance beam propagation method based ona finite element scheme: application to photonic crystal fibers
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Full-vectorial imaginary-distance beam propagation method based ona finite element scheme: application to photonic crystal fibers

机译：基于有限元方案的全矢量虚距光束传播方法：在光子晶体光纤中的应用

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摘要

A full-vectorial imaginary-distance beam propagation method basednon a finite element scheme is newly formulated and is effectivelynapplied to investigating the problem of leakage due to a finite numbernof arrays of air holes in photonic-crystal holey fibers (HFs). In ordernto treat arbitrarily shaped air holes and to avoid spurious solutions, ancurvilinear edgeodal hybrid element is introduced. Furthermore, innorder to evaluate propagation characteristics of not only bound modesnbut leaky modes in HFs, an anisotropic perfectly matched layer is alsonemployed as a boundary condition at computational window edges. It isnconfirmed from numerical results that the propagation loss increasesnrapidly with increasing wavelength, especially for HFs with one ring ofnsmaller air holes, and that the propagation loss is drastically reducednby adding one more ring of air holes to the cladding region
机译：提出了一种基于有限元方案的全矢量虚距光束传输方法，该方法有效地应用于研究光子晶体多孔光纤（HFs）中的气孔阵列数量有限而引起的泄漏问题。为了处理任意形状的气孔并避免虚假的解决方案，引入了曲线边缘/节点混合元件。此外，为了评估HF中不仅是束缚模态而且是泄漏模态的传播特性，在计算窗口边缘处还采用各向异性的完美匹配层作为边界条件。从数值结果可以确认，传输损耗随波长的增加而迅速增加，特别是对于具有一圈较小的气孔的HF，并且通过在覆层区域增加一圈气孔，可大大降低传输损耗。

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