波导

By the proposed method, the exact calculation of the 3-D complexly structured waveguide EM fields is realized.

该方法克服了目前的有关数值分析方法在处理三维复杂结构波导边值问题所遇到的主要困难，实现了三维复杂结构波导边值问题的精确而有效的数值计算。

The method of ultrasonic broaching waveguide entocoele mentioned in th e article is the impulse machining method, in the broaching process the broachin g tool is thrown over the vertical ultrasonic vibration to obviously improve wor king accuracy and surface quality of waveguide entocoele.

本文提出的波导内腔超声推挤方法是一种脉冲加工方法，其实质是在推挤工作过程中，给推刀施加纵向超声频振动，以大幅度提高波导内腔加工精度和加工表面质量。

For high quality voice transformation, a novel parameter extraction scheme for glottal flow derivative is proposed based on Legendre orthogonal decomposition.

提出了一种用于源-目标说话人声门波导数参数转换的、基于勒让德正交分解的声门波导数波形参数提取方法。

Coupling between nonparallel waveguides is studied by coupling mode theory, and the coupling equations and coupling coefficients are obtained.

利用耦合模理论对非平行波导耦合特性进行了研究，得到了非平行波导的普遍性耦合方程及耦合系数表达式。

The shortcoming of ordinary multimode Y branch optical power splitter is that the branch characteristic strongly depends on the excited modal distribution. Different input conditions including different input modes and different input positions will excite different modes and different intensity distribution of these modes in highly multimode waveguides. The interference of these modes will contribute to distribute unstably, i.e.

多模Y分支器件的设计中存在一个共同的问题，即随着光入射条件的不同(包括入射光的模式不同和输入进波导端面位置不同等)，多模波导中所激励起的模的数目以及各个模之间的功率分配也各不相同，激励起的多个模式之间总是存在着不同程度上的相互干涉影响，从而最终影响功分器的分束均匀性。

Narrow waveguide after input section can effectively filter out the high modes which cause the ununiformity of Y-branches and has little influence on the length and excess loss of the device.

在输入波导后添加一段起模式过滤作用的窄波导结构，可以在对器件长度及损耗影响很小的情况下，有效滤除高阶模，减小干涉效应，改善器件输出的均匀性。

Aiming at the structure and refractive-index profile of wide-angle cross waveguide, the optical field distribution has been calculated by the method.

数值计算对交叉波导的设计和优化有着重要的意义，而选择正确的计算方法是交叉波导数值计算的关键。

Based on deeply-etched SiO2 ridge waveguides which support sharp bendings, a compact multimode interference power splitter was designed.

基于深刻蚀SiO2脊型波导的紧凑型多模干涉功分器，采用深刻蚀SiO2脊型波导，利用其弯曲半径小的优点，设计了一种紧凑型1×2多模干涉功分器。

The multimode interference couplers are used to implement the conversion or combination of modes in integrated optical circuit.

多模波导干涉耦合器在集成光路中被用来实现波导模式的转换或合并。

The temperature step is thought to have a strong influence on the characteristics of the laser diodes.

由于脊形波导的弱自建波导特性，这一温度台阶会对侧向模式的限制产生较大的影响。

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。