最后，我们利用耦合模理论和有限时域差分技术研究了非线性缺陷对构成的光子晶体分子的单向导通行为。
Finally, we investigate the unidirectional transmission behavior of PC molecules consisting of nonlinear defect pairs by use of the coupled mode theory and the finite-difference time-domain technique.
二维时域有限差分仿真结果表明，在大部分光子晶体波导导模的频谱范围内，传输效率高于98%。
The simulation results show that the power transmission efficiency is over 98% in a large part of the frequency range of the guided mode of photonic crystal waveguide.
提出了一种新型的分步有限差分(SSFD)算法来求解非线性锁模脉冲传输方程。
A novel numerical algorithm SSFD (split-step finite difference) has been presented for solving nonlinear pulse propagation equation.
该放大器采用全差分结构以获得高输出摆幅，利用源反馈技术改善线性度，并设计了共模反馈电路以稳定共模输出电压。
The amplifier employs fully differential structure to obtain high output voltage swing, and uses source degeneration techniques to improve the linearity.
图8示出啦aee旌旗灯号与共模噪声比拟小几，并且证实啦采用差分办法来记载它地需要性。
Figure 8 shows how much smaller the AEE signal is compared to the common mode noise and demonstrates the necessity of using differential methods to record it.
这种类型的干扰一并来到两个差分输入端，因而出现一个共模信号。
This type of interference is induced equally into both differential inputs, and therefore appears as a common-mode signal.
交替方向隐式有限差分波束传输法被用来分析二维限制对称多模波导干涉耦合器。
The alternate-direction implicit finite difference beam propagation method (FD-BPM) is used to analyze the two-dimensional (2D) symmetrical multimode interference (MMI) couplers.
交替方向隐式有限差分波束传输法被用来分析二维限制对称多模波导干涉耦合器。
The alternate-direction implicit finite difference beam propagation method (FD-BPM) is used to analyze the two-dimensional (2D) symmetrical multimode interference (MMI) couplers.
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