查询词典 waveguides

This kind of coupling waveguides can decrease the coupling loss between the optical fiber and photonic crystal structure.

这些耦合波导能够降低光纤和光子晶体结构之间的耦合损耗。

This paper presents the method of computation for waveguides partially filled with dielectric by using finite-difference time-domain method.

给出用时域有限差分方法计算电磁场问题的差分格式，详细介绍了FDTD法分析介质填充波导截止频率的计算过程。

The analysis is extremely useful in the accurate design of three-dimensional integrated optical devices based on spatial-crossing waveguides.

为基于空间波导的三维集成光学器件的设计和分析提供理论基础。

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。

Finally, the effect of spin coating polymer film error to the attenuator was simulated. Three kinds of errors were considered, which were film thickness, waveguides width and angle of Y branch.

最后，考虑了旋涂法成膜及光刻对器件形成造成的宏观误差，模拟了薄膜厚度，波导宽度和Y分支角钝角给器件性能带来的影响。

The parameters include waveguide width: 8μm, titanium film thickness:50~60nm, index change: 0.006, diffusion temperature: 1050 and diffusion time: 9~10 hours.Designed and produced a 2 X 2 coupler Optical switch and a 1 X 2 digital optical switch. The coupler optical switch was produced by AP reversal structure, with the main parameters such as total length of switch: 30mm, waveguides center distance: Hum, interaction length: 17mm, and at 17V with a crosstalk of -18dB. The digital optical switch was produced by asymmetry electrode Y branch structure. The main parameters of this switch such as switch length: 25mm, the angle of Y branch: 0=0.1? center distance at branch end: 30μm, the center distance of electrons: 12μm, and at 27V with a crosstalk of 18dB.

设计并制作了2×2耦合型光开关和1×2数字开关，其中耦合型开关主要采用的反转Δβ定向耦合器开关，开关长度约30mm，波导宽度8μm，波导间距14μm，耦合区长度17mm，电极主要采用三电极结构，最终测得对TE模开关电压＜-15，消光比≈18dB；数字开关采用非对称电极Y分叉数子开关结构，利用BPM软件模拟了其开关特性并优化了器件参数，制作中采用的主要参数为：开关长度约25mm，Y分叉角θ=0.1°，Y分叉末端波导间距30μm，电极间距12μm，最终测得开关电压27V，消光比≈18dB。

We using the Si substrate has 200μm thickness SiO because of its low absorbing and scattering, so it could be the anti-reflection layer;it also has well-variable refractive index、well-transmittal and well-heated stability of JSR THB-120N negative photoresist which we choice to be materials to develop the polymer waveguides.

选择具有成长200μm厚度的二氧化矽之矽晶片作为实验所需之基板，因为二氧化矽对光具有低本质吸收及低散射性等特质，故可作为所设计之抗反射层；所使用的光阻为JSR THB-120N来作为制作高分子波导的材料，它具有可调折射率、良好的导光性以及良好的热稳定性等。

The three-arm interferometer includes three waveguides each exhibiting a linearly increasing path length optically connected to a 1x3 coupler and a 3x3 coupler.

所述三臂干涉仪包括与1×3耦合器和3×3耦合器光连接的三根波导，每根波导的路径长度呈线性增加。

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。

Its Nonlinearity holds at 160 degree C, it is one of the materials that have the best thermal stability. 3. polarization inversion films that consist of melamine formaldehyde resin and polymer/silica hybrid material were fabricated, a simulation model for calculating frequency doubling from multi-layer waveguides was established.

是迄今为止所发现的热稳定性最好的光学基质材料之一。3、利用密胺材料和聚合物/氧化硅复合材料最佳极化温度的差异，制备出重复性好、有较好热稳定性的极性翻转薄膜，并建立了多层波导结构光倍频计算模型。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。