Title :
Analysis of Waveguide Discontinuities by a Fourth-Order Finite-Difference Reflective Scheme
Author :
Zhang, Hua ; Guo, Qingyi ; Huang, Wei-Ping
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont.
Abstract :
A highly accurate reflective scheme is developed for analysis of two-dimensional (2-D) waveguide discontinuities by using the fourth-order finite-difference (FD) formula. It is demonstrated that the new method achieves a significantly higher accuracy/computation cost ratio in comparison with the conventional FD method. Furthermore, the advantage of the new method is more pronounced for the case of high-index-contrast structures with small feature sizes
Keywords :
finite difference methods; integrated optics; light reflection; optical waveguide theory; waveguide discontinuities; accuracy-computation cost ratio; fourth-order finite-difference formula; high-index-contrast structures; integrated photonic devices; reflective scheme; waveguide discontinuities; Computational efficiency; Finite difference methods; Integral equations; Maxwell equations; Optical reflection; Optical waveguides; Time domain analysis; Transmission line matrix methods; Waveguide discontinuities; Waveguide junctions; Finite-difference (FD) methods; high-index-contrast waveguides; reflection; waveguide discontinuities;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.889136
