During the change of an input signal,the key device in Schmitt circuits,which realize a sudden transition of the threshold value,is the threshold controllable switch.
在输入信号的变化过程中，施密特电路实现阈值突变的核心部件为阈值可控开关。
The results of investigating indicate that the initiative chirp reduce the coupling length as well as make the switching characteristics become worse,correspondingly,the second order coupling coefficient dispersion shorten the periods of the optical solitons energies transforming between two cores,increase the switching threshold power and make switching characteristics become sharper.
研究表明,初始啁啾使光脉冲传输时的耦合长度减小,耦合器的开关特性变差;二阶色散耦合系数使光脉冲在二纤芯之间能量转换的周期变小、开关阈值功率增加而且开关特性也变得更加陡峭。