导波

The numeric resultS for two different taper profiles in step-index fiber show that the couplings to the reflected mode and the high-order modes are relatively small provided the change is gradual, and the fundamental mode has the capability of excellent transmission which can adjust itself adiabatically to the reflective index change.

对阶梯折射李光纤两种不同折射率Taper结构的数值计算结果表明：在折射率变化相对缓慢情况下，这种折射率Taper耦合器的基模反向散射和向高阶模的耦合都很小；基模能够自适应地调节以适应波导折射率的渐变，具有优良的传输性能。

The computation of external Q of waveguide loaded cavities, which is akey technique in SLED design, is studied.

研究了SLED设计中的波导加载谐振腔系统外部Q值的计算问题。

The foundational cell of this amplifier is a double antipodal flexible substrate integrated waveguide including symmetrical dove-tail taper transition structure.

中文摘要：这种功率放大器的基本组成单元是一对含对称尖劈过渡结构的柔性基片集成波导。

In this paper, a waveguide-based 1×2 power-combining structure at Ka-band using double antipodal finline-to-microstrip transitions is proposed, and the optimal tapers are analyzed by using spectral domain method.

提出一种基于双对极鳍线-微带过渡的Ka频段1×2路波导基功率合成器，借助谱域法完成最佳渐变鳍线阵设计。

Then the scattering characterist ics of the iris with circular window in circular groove waveguide are analyzed.

然后分析了圆形槽波导中放置圆形膜片的散射特性。

The circumferential interference is found to be an essential mechanism in determining the transport properties of the carbon nanotubes.

我们指出周长方向的波函数干涉是影响碳纳米管电导的重要因素。

The Mie theory of cylindrical structures and the heat transfer modeling proposed by A.J.C.Grellier was used to derive the increment relation of the laser power with the drawbench distance.

熔锥光纤是具有锥腰和对称双锥过渡区的特殊波导结构，主要应用在对声光转换器[4]、光学放大器[5]和微腔器件以及光子晶体的耦合输入输出中[6-7]。

A housing is provided forming an atmospheric duct with a turbine mounted therein and drivingly connected to the electrical generator.

房屋是提供形成了大气波导与涡轮展开，并drivingly连接到电动发电机。

A quasirectangle waveguide structure is designed using organicinorganic hybrid material to meet the needs of the fabrication of electrooptic switches.

为了满足制作电光开关的需要，采用有机无机杂化材料设计了一种准矩形的波导结构。

It is the technology route that designing and constructing the structure of chalcogenide-LiNbO3 compound waveguide, the interaction of light-photo effect and electrooptic effect of which are used to realize the above-mentioned effects. The execution is carried out in following five fields.

技术路线是设计和构造硫属半导体-LiNbO3的复合波导结构，利用硫属半导体的光光效应和LiNbO3晶体的电光效应的组合作用实现上述功能。

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。