It is determined that the optimum driving force should be odd symmetric to its half moment T/ 2 and with a time duration two times of the cycle of the first mode. 在其指导下,选择了作用力的作用时间和波形:该作用力的作用时间T应为机械结构一阶固有频率对应周期的2倍,且为关于T/2奇对称的单周期波形。
The transmission problems of an even mode and an odd mode of TE waves in symmetric slab waveguides are considered. 本文讨论了非线性对称平板波导中的TE波的偶模及奇模的传输问题。