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CLC number: O42
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2015-07-08
Cited: 0
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Jian-xin Zhu, Guan-jie Wang. New computational treatment of optical wave propagation in lossy waveguides[J]. Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/FITEE.1400406 @article{title="New computational treatment of optical wave propagation in lossy waveguides", %0 Journal Article TY - JOUR
Abstract: This submission is an expanded paper of author's prior work, and its main content is the research of optical wave propagation in lossy waveguides by solving a 2D Helmholtz equation with the Chebyshev pseudospectral method. The structure of this paper is great, and its derivations are rigorous. The final numerical results show that the proposed method is valuable to improve the precision.
有损耗波导中光传播的新计算处理创新点：提出用共轭微分矩阵在算子步进方法中进行局部基转换，避免了求逆运算。所提处理方法提高了步进计算的稳定性，改善了传播计算精度。 方法：针对光波在有损耗波导中传播的数学模型-带有复折射率的Helmholtz方程，对基于DtN（Dirichlet-to-Neumann）映射(把边值问题化为初值问题)的单侧重构算子步进求解方法进行改进。一方面用切比雪夫伪谱方法离散方程的横向算子，另一方面为避免求逆，采用共轭微分矩阵在算子步进方法中实施局部基转换；最后，用改进所得的算子步进求解方法计算波在有损耗波导中的传播性态。 结论：对带有复折射率的Helmholtz方程的边值问题求解，提出了改进算子步进求解方法。实施该方法能快速、高精度地求解此问题，并得到光波在有损耗波导中传播真实性态，进而有助于光电器件的优化设计。 关键词组：
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