导波

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。

In view of the development about the certain airborne radar antenna array,considering the structural features of antenna array,analyse the cruces in manufacturing of feed cavity and radiant plate,and present the corresponding solution by mainly dealing with precise positioning style,delicate clamp design,error distribution and compensation method,high speed machining technology design,machining simulation and program optimizing.

某机载雷达平面裂缝阵列天线的单面阵如图1所示。该面阵布置多路裂缝线源，共分布384处长度各不相同的辐射裂缝，每一路线源均由脊型波导口单独馈电。面阵由辐射板和馈电腔两个零件组成，采用整体钎焊成形。线源结构为非对称单脊共线形式，即在普通单脊波导的两侧与辐射裂缝相对应的位置上布置不对称的凹台。

The cutoff conditions of metal-clad waveguides or loss dielectric waveguides are discussed. The effects of metal-cladding on the cutoff condition of graded index waveguides are analyzed at first. The principle of cutoff intensity modulator has discussed in detail.

本文首次提出一种适合于分析含金属覆盖层的均匀和渐变介质波导在截止点附近的光学特性的近似的解析方法，并对金属覆盖层的均匀阶跃介质波导在截止点附近的模传播特性作了全面的分析，所得到的结果同精确的数值解结果相吻合。

An object is to achieve both high-density output waveguides and uniformity of the losses between the output waveguides.

本发明的一个目的是实现高密度的输出波导以及输出波导之间的损耗均匀性。

The characteristics of plane waveguides under different operating conditions were tested.

并对在不同工艺条件下的波导膜特性进行了测试，分析了影响波导膜质量的各个因素。

This method can be used to solve coupled-mode equations of a multi-waveguides array with considering coupling among any waveguides.

采用该方法可以求出任意数目波导组成的阵列，考虑任意波导之间耦合的耦合模方程组的解。

The results show that the dependence of bend loss on the waveguides parameters is analogous for the Y-branch waveguide with two kinds of S-shaped bend.

结果表明，两种S弯曲下的Y分支波导的弯曲损耗，随波导结构参数的变化基本上是相同的，但二者的表现并不完全一致。

The stop band above the waveguide cut-off frequency can be controlled by tuning the varactors loaded between the arms of SRRs. Similarly, the pass band below the waveguide cut-off frequency can also be tuned by the same token.

在波导的截止频率之上，我们可以通过控制变容二极管的电容值达到控制禁带的目的，在波导的截止频率以下，我们依然可以通过改变变容二极管的电容来控制通带。

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。