Sensitivity-Based Structural Optimal Design With Bi-Directional Beam Propagation Method for Photonic Devices in High-Index-Contrast Waveguides
Sensitivity-Based Structural Optimal Design With Bi-Directional Beam Propagation Method for Photonic Devices in High-Index-Contrast Waveguides
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DOI：
10.1109/jphot.2020.3029032
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发表时间：
2020-10
影响因子：
2.4
通讯作者：
A. Iguchi;K. Morimoto;Yasuhide Tsuji
中科院分区：
文献类型：
--
作者：
A. Iguchi;K. Morimoto;Yasuhide Tsuji
本文提出了一种基于灵敏度分析的结构优化方法，利用双向光束传播法（Bi-BPM）有效地设计高折射率对比度光波导中的无源器件。在这项研究中，Bi-BPM的基础上缩放版本的Denman-Beavers迭代（S-DBI）与分支切割技术，和散射算子制定（SO-Bi-BPM）执行稳定，准确的波传播分析。比较了三种灵敏度计算方法对设计变量的灵敏度，揭示了采用SO-Bi-BPM进行灵敏度分析的有效途径。通过设计波导光栅波长滤波器和一维光子晶体偏振器，研究了该设计方法的应用范围。
This paper presents structural optimization based on sensitivity analysis exploiting a bi-directional beam propagation method (Bi-BPM) to design efficiently passive components in high-index-contrast optical waveguides. In this study, the Bi-BPM based on scaled-version Denman-Beavers iteration (S-DBI) with branch-cut technique, and scattering operator formulation (SO-Bi-BPM) is employed to execute stable, accurate wave-propagation analysis. Comparing three computation approaches of sensitivity with respect to design variables, efficient way of sensitivity analysis is revealed when the SO-Bi-BPM is used. The application range of the presented design approach is studied by designing a wavelength filter with waveguide grating, and a polarizer based on 1D photonic crystal (1D-PhC).