Horikis Theodoros P, Kath William L
Engineering Sciences and Applied Mathematics, McCormick School of Engineering, Northwestern University, Evanston, IL 60208, USA.
Opt Lett. 2006 Dec 1;31(23):3417-9. doi: 10.1364/ol.31.003417.
A finite-difference approach based upon the immersed interface method is used to analyze the mode structure of Bragg fibers with arbitrary index profiles. The method allows general propagation constants and eigenmodes to be calculated to a high degree of accuracy, while computation times are kept to a minimum by exploiting sparse matrix algebra. The method is well suited to handle complicated structures comprised of a large number of thin layers with high-index contrast and simultaneously determines multiple eigenmodes without modification.
一种基于浸入界面法的有限差分方法被用于分析具有任意折射率分布的布拉格光纤的模式结构。该方法能够以高精度计算一般的传播常数和本征模，同时通过利用稀疏矩阵代数将计算时间保持在最低限度。该方法非常适合处理由大量具有高折射率对比度的薄层组成的复杂结构，并且无需修改即可同时确定多个本征模。
