导波

In the course of testing, the laser was used as light source with twin-light path, dispelled the error of light-intensity variation of traditional detection devices, the measurement result only relates to the relative change of optical intensity .

测量以激光为光源，采用双光路法，消除了通用检测仪由于光源光强不稳定产生的误差，使得测量结果只与光强的相对变化量有关；光波出入波导均采用棱镜耦合，减少了普通测试方法因样品质量及面形误差和端面洁净情况不同或输出透镜不能很好汇聚光波而产生的误差；利用常规仪器设备实现了数字化检测显示，避免了人为主观读数产生的误差；利用AD538实时模拟计算芯片，提高了计算精度和运算速度。

The property and the calculation of the distributed parameters and loss of the transmission lines were analyzed theoretically.

从理论上分析了传输线分布参数和损耗，利用0.13μm CMOS工艺制作了特征阻抗分别为50和70Ω的微带线和共面波导元件库，在0.1—30 GHz频率范围内利用网络分析仪和SOLT测试技术进行测试。

Experimental results show that very little transmission loss＜ 0.1dB through the quasi-optical system is achieved.

实测结果表明，整个系统的插损在2.6mm波段仅0.1dB，这种损耗比起波导系统而言，是极其微小的。

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 MEMS switch consists of a set of quasi-finite ground coplanar waveguide transmission lines and a right and left swing cantilever beam.

横向金属接触开关包括了一套有限的共面波导传输线和左右摆动的悬臂梁。

The laser produced plasma channel may be a promising means to produce an efficient compact soft X ray laser.

短脉冲强激光和气体靶相互作用可产生等离子体波导。

Scattering parameters of the waveguide sample holder filled with the materials have been obtained over X band.

采用扫瞄电镜观测了镀镍前后的表面微观结构，制备成样品放入X波段波导框中，在微波网络分析仪上进行散射参数测量，计算了电磁特性参数。

The present invention relates to a kind of tunable plasma resonant cavity for PCVD optical fiber perform rod processing machine. The tunable plasma resonant cavity includes cylindrical resonant cavity casing and cut-off waveguides set on two ends of the casing, and features the tuning piston, which is set on one end of the cylindrical resonant cavity and has middle part with through hole and back end stretched beyond the casing.

本发明涉及一种用于PCVD光纤预制棒加工机床的可调谐等离子体谐振腔，包括有圆柱型谐振腔壳体，在圆柱型谐振腔壳体的两端设置截止波导，其不同之处在于在圆柱型谐振腔腔体的一端安设调谐活塞，调谐活塞的中部开设通孔，后端延伸至圆柱型谐振腔壳体外端。

The InGaAs/GaAs/AlGaAs strained layer quantum well lasers were grown by molecular beam epitaxy. Ridge waveguide InGaAs/GaAs/AlGaAs strained layer quantum well lasers operating in the fundamental transverse mode up to 140 mW at a wavelength of 980 nm were fabricated.

利用分子束外延生长了InGaAs/GaAs/AlGaAs应变量子阱激光器材料并研制出基横模输出功率大于140 mW，激射波长为980 nm的脊形波导应变量子阱激光器，其微分量子效率为0.8 W/A，垂直和平行结平面方向远场发散角分别为28°和6.8°。

Furthermore, the calculation precision can be satisfied the need of engineering application in waveguide. So it is of important application values that producing and improving of the new method and application in waveguide and resonance cavity for enriching guide theory, analysis and calculation of guide performances in engineering applications.

因此，该方法的完善与计算精度的改进以及在波导和谐振腔问题中的应用研究，不仅对于丰富电磁理论有着重要的意义，而且对于解决实际电磁工程问题也有着重要的应用价值。

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。