窄边对跖脊波导主模带宽研究  

Study on the influence of ridge to the dominant-mode bandwidth of antipodal-ridge waveguide

作　　者：胥万松[1,2] 郑勤红[2] 彭金辉[3] 姚斌[2] 

机构地区：[1]云南德宏师范高等专科学校,芒市678400 [2]云南师范大学物理与电子信息学院,昆明650092 [3]昆明理工大学材料与冶金工程学院,昆明650093

出　　处：《激光杂志》2012年第6期14-15,共2页Laser Journal

基　　金：国家自然科学基金重点项目(51090385)

摘　　要：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。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.

关 键 词：窄边对跖脊波导 麦克斯韦方程 时域有限差分法 主模带宽 

分 类 号：TN248.1[电子电信—物理电子学]