波导

Based on solving the coupler mode equarions of PPLN wavelength converter, the scheme of controlling the PPLN wavelength converter using electrooptical effect is proposed for the first time.

分析了PPLN波导中基于级联倍频与差频全光波长变换特性，在模拟求解PPLN倍频耦合波方程的基础上，提出了这种器件的电光调控方案，并首次论证了作为电光开关的可能性。

Measurement of internal parameters of electrooptically Q-switched RF excited waveguide CO2 laser using rotatable phase plate .

旋转波片法测量电光调Q射频波导CO2激光器的内部参数。

This kind of SWS decreased the field strength in the structure efficiently and enhanced the power capacity of the device obversely in the THz regime. The structural parameters were optimized with the numerical simulation method, and a set of best parameters were presented.

采用数值模拟的方法对该慢波系统的结构参数进行了筛选，最终选取波导内半径为2mm、槽深为0.2mm、槽宽为0.6mm、单周期长度为1mm，共采用17个周期。

When several ultrafast pulses are propagating simultaneously, nonlinear processes such as cross-phase modulation, cross non-degenerate TPA, SRS and four-wave mixing, and so on, will be considered. One of the nonlinear processes will play dominance for various conditions.

当多波长超快脉冲在波导中传输时，脉冲之间将发生交叉相位调制、交叉非简并双光子吸收、受激拉曼散射和四波混频等非线性过程，在不同的条件下，将具有不同的非线性过程起主导作用。

In order to reduce the effect of probe errors in near-field antenna measurement, the solutions are proposed as follows: On the one hand, theoretical formula of probe-compensated is derived; on the other hand, drop-shaped probe is designed and near-zone gain, far-field patterns, axial ratio, main lobe width, input impedance, voltage standing-wave ratio, electromagnetic field and current distribution of probe are obtained through the computer simulation.

针对近场测量中的重要误差源之一&探头&的影响，本文提出解决方法：一方面用探头补偿的方法，根据洛仑兹互易定理和微波网络理论对补偿的解析式进行详细推导；另一方面用两种不同的仿真软件求解终端开口矩形波导探头的近场增益、远场方向图、轴比、主瓣宽度、输入阻抗、电压驻波比、电场分布、磁场分布、表面电流分布等特性参数，可实现探头增益的修正。

The transmission properties of teraherze wave in metal-coated hollow waveguide are studied in the paper.

本文研究了太赫兹波在具有有限电导率的金属镀层空芯波导中的传输特性。

The transmission properties of terahertz wave in metal-coated hollow waveguide are studied.

研究了太赫兹波在具有有限电导率的金属镀层空芯波导中的传输特性。

In order to study the relationship between plus contour and physiological factors,maximum of the derivative of plus wave was presented which is a new characteristic parameter,whose ad- vantages are high sensitivity and simple at calculation.

为了研究脉搏波波形特征与生理因素的关系，提出了脉搏波导数最大值这一新的特征参数，该参数具有灵敏度高、计算简单的优点。

The plane-parallel resonant cavity is built up in theory with the U-shaped bending waveguide for TM mode. The beam splitting and convergence effect are also discussed for the structure composed of filling-factor graded wave-like 2D-PC and one-dimensional multilayer thin films.

利用TM模的U型转弯波导构建了新型的平行平面谐振腔，并指出由填充率渐变型波状结构二维光子晶体和一维多层薄膜构成的混合结构在光分束和抑制光束发散方面的作用及其在平行平面谐振腔中的潜在应用。

Results indicate that the waves with certain frequencies in the waveguide can be downloaded into the cavity when resonance coupling occur and different frequencies are downloaded to cavities with different structures.

而具有特定本征共振频率的光子晶体微腔可将在其附近波导中传播的相应频率成份的光下载到微腔中，不同结构的腔可以&下载&不同频率成份的波。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。