导波器

A directional coupler is composed of multiple photonic crystal monomode waveguides placed in parallel and adjacent to each other.

定向耦合器由多个光子晶体单模波导平行、邻近放置构成。

A low-loss rectangular-passband multiplexer including a three-arm interferometer coherently connected to a waveguide grating router, resulting in a passband substantially of type N=3, without intrinsic loss.

本发明提供了一种低损耗的矩形通带复用器，包括相干连接到波导光栅路由的三臂干涉仪，形成大致为N＝3类型的通带，而没有本征损耗。

The flexible nature of ASOC technology means it can also be utilized to provide application specific, high functionality, high value devices including Arrayed Waveguide Gratings and Variable Optical Attenuators.

ASOC技术的灵活性意味着该项技术同样可以应用于提供偏向于应用的、功能广泛的高价值元器件包括阵列波导光栅以及可调式光衰减器。

A series of microwave filters and diplexers are designed by optimization and fabricated based on HFSS and the programs written by myself.A combline SIR cross-coupled filter is designed by HFSS. Cha.5 presented the design of dual-band bandpass filter and corner diplexer.

第六章利用自编程序设计了几种较为新颖的基片集成波导滤波器，其中包括多频带阻滤波器、交叉耦合吸收式滤波器和带Triplet拓扑的广义切比雪夫平面双工器。

Based on the results of the theory analysis and computer simulation of ratrace, Waveguide-to-Microstrip Probe Transitions, DGS lowpass filter, the structure was designed and manufacture was made.

在对所用到的功率混合电路，波导－微带探针过渡，以及DGS低通滤波器进行理论分析、计算、和计算机仿真的基础上，制作混频器，并对设计结果进行了测试验证。

Microscopic characteristics of cladded crystal fiber are analyzed by X-ray diffraction, Laue X-ray diffraction and scanning electron microscopy, it is found that magnesium-ion indiffusion does not affect the single crystal structure and the domain structure of the magnesium diffused crystal fiber. It is found for the first time that MgO-rich layer in the magnesium diffused LiNbO〓 surface layer exhibits the crystal structure of an unknown compound from the Li-Mg-Nb-O ternary system and MgNb〓O〓. It is proposed for the first time that this unknown compound and MgNb〓O〓 in MgO-rich layer are the real sources of magnesium-ion indiffusion LiNbO〓. Their appearance indicate that MgNb〓O〓 is in the surface layer of MgO-rich layer, the unknown compound is in the subsurface layer and beneath where the MgNb〓O〓 is located, and these compounds have obviously preferred orientation.

通过镁离子内扩散法，首次在国内实现了具有阶跃和抛物折射率分布的c轴LiNbO〓单晶光纤和a轴Nd：MgO：LiNbO〓单晶光纤的芯—包层波导结构，为我国在该项目的研究填补了空白；建立了晶纤损耗的测量系统，提出了利用单模石英光纤作为晶纤入射光耦合器的思想；通过对晶纤损耗的测量，得到了包层晶纤比未包层晶纤损耗降低约14倍的好结果，并实现了低次模传输：对经镁离子内扩散实现包层后的晶纤的微观特性，利用X射线衍射，劳厄照相和扫描电镜表征发现，晶纤并不因镁离子的内扩散而影响其单晶结构和镁的扩散层畴的变化。

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。