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用坐标变换的倾斜坐标系中的广角光束传播法对光波导进行了分析。与直角坐标系中的广角光束传播法比较 ,在处理大斜角波导时 ,本方法得到了更好的结果。将其用于Y分支波导的分析中 ,也得到了所期望的结果
The optical waveguide was analyzed by the wide-angle beam propagation method in the coordinate system of coordinate transformation. Compared with the wide-angle beam propagation method in Cartesian coordinates, the proposed method achieves better results when dealing with large beveled waveguides. It was also used in the analysis of the Y-branch waveguide, and the desired result was obtained