结果表明，作为调制通道的导模阶数越低，调制效率越高。
Results show that the lower guide mode acting as the modulation channel is, the larger modulation index can be obtained.
通过实验分析，证实了对场分布影响较大的第一阶谐振频率是TE101模，TE101模的谐振频率是TEM传输室的上限使用频率。
Through the experiment, it was validated that the first frequency that have great effect on the field distribution is TE101, and the resonant frequency of TE101 is the limited frequency of TEM cell.
增益材料放置的对称性导致奇数阶纵模的损耗，从而增加了微激光器的调谐范围。
Certain symmetry in the allocation of gain material leads to depletion of odd longitudinal modes that, in turn, increases the tunability range of the microlaser.
通过数值计算分析了原子运动速度、场模结构参数和平均光子数对光场二阶相干度和模间相干度的影响。
The influence of atomic motion, the field structure and intensity of photons on second-order correlation function and two-mode correlation function are obtained by numerical calculation.
在多输入系统控制中提出了全程滑模变结构控制方案和利用等效滑模方程进行的递阶滑模变结构控制方案。
A global sliding model variable structure control approach and a sort of hierarchical switching scheme used with equivalent equation are proposed for a class of multi-input systems.
实验结果可以用多模热光场的二阶空间关联性质来解释。
The experimental results can be explained with the second-order spatial correlation of a multimode thermal optical field.
研究同时具有二阶和三阶非线性效应的一维浅栅光子晶体中的矢量耦合模孤子动力学。
The dynamics of vectorial coupled-mode solitons in one-dimensional shallow grating photonic crystals with quadratic and cubic nonlinearities is discussed.
结果且仍可得到H1模最优阶误差估计。
以圆光纤为例，讨论了一阶近似本地场形式及基模场在最大值处的场位移。
Taking the circular fibres for the example, the first order correction local field and field shift in the fundamental mode peak field are discussed.
零走离点的出现，将有效地抑制一阶偏振模色散。
The occurrence of zero walk off point can efficiently restrain the first_order polarization mode dispersion.
此外，采用全局二阶滑模控制可削弱抖振现象。
The global second order sliding mode control approach is applied to avoid chattering phenomenon.
针对工业现场普遍存在的高阶对象，提出了一种基于误差驱动参数自整定递阶结构的模糊滑模控制策略。
Presents a new method to deal with higher-order process, called hierarchical fuzzy sliding mode control with error-driven adjustment parameters.
然后将一个子系统的控制目标嵌入到另一个子系统的控制目标中，用一个控制量使两个子系统同时向各自的滑模面趋近，使该四阶系统稳定。
Study a class of fourth-order nonlinear systems, decouple the whole system into two second-order systems, and design their separate sliding surface of each subsystems.
以AOA电流模式多路输出积分器和AOA电流模多路输出比例电路为基础，设计了多功能二阶电流模式滤波器。
Based on a current-mode integrator and proportion circuit multiple outputs by AOA, multifunctional second-order current-mode filter was proposed.
在双模光场情形，模间耦合对产生一阶类相变的影响不可忽略。
For the two-mode laser case the influence of the mode coupling to the first-order-like transition can not been neglected.
通过构造动态滑模输出，使得系统零动态稳定；采用全局二阶滑模控制来消除抖振。
Valid dynamic sliding mode output that guarantees the system stable zero dynamics was constructed, and a global second order sliding mode control was adopted to circumvent chattering phenomena.
本文对一类非线性抛物型方程提出对称修正有限体积元方法，给出能量模最优阶误差估计，并证明了对称修正有限体积元方法的解与一般有限体积元方法的解之差是一个更高阶项。
In this paper, we present a kind of symmetric modified finite volume element method for nonlinear parabolic problems, and give the optimal order energy norm error estimates for full discrete schemes.
通过模拟计算一阶TM模的场强分布，我们得到耦合到输出波导中的效率达到53%。
The simulated intensity distribution for the first-order TM mode shows that the coupling efficiency in the waveguide reaches 53%.
仿真对比研究表明二阶滑模控制下的着舰导引系统有较好地抑制气流扰动的能力。
Second-order sliding mode controller and automatic carrier landing system is designed. The result of simulation research shows the system has good capability of air attenuation.
设计了二阶滑模控制器及对应的自动着舰导引系统。
Second-order sliding mode control is used in carrier landing control.
最后分析了交叉相位调制效应对波分复用系统中一阶偏振模色散补偿的影响。
Finally the effect of XPM on first-order PMD compensation in WDM systems is analyzed.
利用琼斯传输矩阵法研究了二阶偏振模色散的统计特性。
Statistical characteristics of second order polarization mode dispersion (2 nd PMD) are investigated by Jones Transfer Matrix method.
考虑了光源初始啁啾的作用 ，推导出均方根脉宽的解析表达式 ，分析表明 ：二阶偏振模色散对脉冲展宽的作用与群速度色散及啁啾有关 ，一阶偏振模色散的作用则与这两者无关。
Taken into account both second order dispersion and SPM in the abnormal-dispersion region of single-mode fibers, we obtained the expression of chirp induced by GVD and SPM.
一阶振荡导模的传播常数随着平板厚度的减小而增加，此性质与传统的金属包覆波导不同。
The propagation constant increases with decreasing slab thickness for the first-order oscillating mode, which is different from that in traditional metal-cladding waveguides.
从分析传导测试原理入手，建立了针对差模干扰信号的一阶滤波器的电路等效模型；
By the way of analyzing the transmit test principle, the model of the first-order filter in allusion to DM interface signal are established;
由纤芯基模、一阶包层模式的场分布推得其功率分布 ，进一步得到两种模式的归一化常量。
Power distributions for fundamental core mode and first rank cladding modes are formulated using their field distributions.
由纤芯基模、一阶包层模式的场分布推得其功率分布 ，进一步得到两种模式的归一化常量。
Power distributions for fundamental core mode and first rank cladding modes are formulated using their field distributions.
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