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arXiv physics/0605002physics.optics
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弯曲光波导的精确等效剖面公式

Exact equivalent-profile formulation for bent optical waveguides

Dzmitry M. Shyroki

摘要:

分析通过波导弯曲的光引导的一种普遍的、直观的和计算上廉价的方法是通过引入具有修改的折射率分布以考虑实际波导弯曲的等效直波导。在这里,我们修改了常用的等效折射率公式,结束了其简单的扩展,使严格的治疗一维和二维限制,均匀弯曲的波导,包括紧密盘绕的微结构光纤,弯曲脊波导和环形微谐振器。我们还表明,这种技术只适用于各向同性或单轴各向异性材料组成的波导,各向异性轴垂直于曲率平面。

英文摘要:

A widespread, intuitive and computationally inexpensive method to analyze light guidance through waveguide bends is by introducing an equivalent straight waveguide with refractive index profile modified to account for actual waveguide bend. Here we revise the commonly used equivalent-index formula, ending up with its simple extension that enables rigorous treatment of one- and two-dimensionally confined, uniformly bent waveguides, including tightly coiled microstructure fibers, curved ridge waveguides and ring microresonators. We also show that such technique is applicable only to waveguides composed of isotropic or uniaxially anisotropic materials, with anisotropy axis directed perpendicular to the curvature plane.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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