The influence of the ridge position on the cutoff wavelength of the dominant mode in asymmetric single ridge waveguide is analyzed by finite difference method. 用有限差分方法分析不對稱脊波導中脊位置變化時對主模截止波長的影響。
In the case of homogeneous broadening only one mode can normally oscillate. 對於均勻加寬的情況，只有一個模能正常地振蕩。
The resonant frequency of a quartz crystal is generally determined by the size of the plate combined with the mode in which it vibrates. 石英晶體的諧振頻率通常是由組合振蕩模式之振動片尺寸來決定的。
