CAJ | 학술논문

提出用时域有限差分（FDTD）方法分析窄边对跖脊波导的主模带宽。通过对长边对跖脊波导带宽的分析及与相关文献报道结果的比较验证了FDTD方法分析波导带宽问题的有效性；用FDTD方法计算了脊位置、脊宽及脊高变化对窄边对跖脊波导主模带宽的影响，计算结果表明：与传统的对跖脊波导相比，窄边对跖脊波导减小了单模带宽。
제출용시역유한차분（FDTD）방법분석착변대척척파도적주모대관。통과대장변대척척파도대관적분석급여상관문헌보도결과적비교험증료FDTD방법분석파도대관문제적유효성；용FDTD방법계산료척위치、척관급척고변화대착변대척척파도주모대관적영향，계산결과표명：여전통적대척척파도상비，착변대척척파도감소료단모대관。
The finite- difference time- domain (FDTD) method is applied to analyze the bandwidth of the dominant mode of the short side antipodal- ridge waveguide, the numerical results have been compared with ones reported in the literatures, which has demonstrated the efficiency of FDTD method. The bandwidth of the dominant mode of the short side antipodal- ridge waveguide has been calculated,and the law of the dominant mode bandwidth has been obtained when the ridge position, the ridged width, and the ridged height vary. Comparing with the conventional long side antipodal - ridge waveguide, there is a minimum bandwidth in the short side antipodal- ridge waveguide.