光

In part one (chapter 2-3), two new methods and systems of optical parallel logic operation are studied. Triple-in Double-out shadow-casting logic operation system is proposed and realized for the first time. Based on this, optical full adder and 3-bit decoder array logic have been obtained. It is the first time to use coding pattern and different reading-writing model to realize BSO-PROM optical parallel logic operation where the time-order operation is avoided, so that the computing speed of optical parallel logic gate which uses this kind of spatial light modulator is increased, and it is successfully used in optical symbolic substitution .

在第一部分，对两种新的并行光学布尔逻辑运算方法及系统进行了研究：首次提出并实现了三输入、双输出铸影光学逻辑运算系统及其由此得到的光学全加器，并提出一种以此为基础的3-比特译码器阵列逻辑，首次利用图形编码和不同的读写模式实现了无时序操作的BSO-PROM光并行逻辑运算，大大提高了这种空间光调制器用作光并行逻辑门的运算速度，使之成功地用于光学符号代换之中。

Transmission character during free space and transform of the Gaussian beam during transmiting C-Lens is analyzed. The numerical simulation intensity distribution of decentered Gaussion beam has been presented before and after coordinate transforming of Gaussian beam in focal plane of C-Lens.

本文首先分析了基模高斯光束的在自由空间中的传输特性，以及C-Lens对基模高斯光束的变换；给出了从光纤中出射的高斯光束经C-Lens变换后，出射光的光强分布以及对其进行坐标轴变换后的光强分布。

Using the relations between Hermite and Laguerre-Gaussian modes and expanding the window function of two-dimensional rectangular hard-edged apertures into a finite sum of complex Gaussian functions, the propagation of complex- argument Laguerre-Gaussian beams through a paraxial optical ABCD system with a rectangular hard-edged aperture is studied. An analytical propagation equation is derived and used to study the diffraction at the rectangular hard-edged aperture and the focusing properties of complex-argument LG beams.

利用拉盖尔－高斯模和厄米－高斯模的变换公式，并使用将二维矩孔光阑窗口函数展开为有限个复高斯函数之和的方法，得到了复宗量拉盖尔－高斯光束通过含矩形硬边光阑近轴ABCD光学系统的变换的解析传输公式，并对复宗量LG光束通过矩形硬边光阑的衍射和聚焦特性进行了研究。

At night this glow is known as the gegenschein (German for "counter glow"), and can be seen as a faint glow in an extremely dark sky.

这种夜空中的辉光，就是所谓的对日照(德文的意思即为"对面的辉光")，只有在非常非常暗的夜空中，才能看到这种很暗的辉光。

Optical pickup is one of the kernels of optical storage industry. It is used for all kinds of optical storage systems widely. It consists of optical collimator system, optical focusing system, servo error signal generating system and the enforce element of servo system .

中文题名DVD光学读取头关键技术研究副题名外文题名 On key technology of DVD pickup 论文作者王继平导师阮玉学科专业物理电子学研究领域\研究方向学位级别博士学位授予单位华中科技大学学位授予日期2003 论文页码总数173页关键词DVD 光学读取头光盘光存储馆藏号BSLW /2003 /TQ597 /2 光学读取头是光存储产业的核心器件，它广泛应用于各类光存储设备中。

Further more ,integrate micro optics elements and semiconductor generating the special function module and chip.

该集成模块可以实现自由空间的光交换和全光排序，在光纤通信和光信息处理具有一定的应用。

When we landed on the island, we went into the cave, we heard that the water voice and there were no light inside, we were on the little boat and slowly move forward to see the glowworm, we saw thousands glowworm who were shimmering and formed to many beautiful picture.

当我们登岛，我们走进了窑洞，我们听到了水的声音，因此没有任何光在洞内，我们就坐一船缓缓向前迈进看到辉光蠕虫，我们看到成千上万的辉光蠕虫的闪烁效果，并形成了许多美丽的图画。

This study utilizes the half tone mask technology, that could integrate the semiconductor electrode and source/drain electrodes to form one mask process, called four masks process.

本论文是利用半色调光罩技术，将半导体电极及源极/汲极电极整合为一道光罩，成为四道光罩制程。

Taking an optical system with a hard-edge aperture as an example, the intensity distributions of two low modes of Hermite-Gaussian beam were simulated and numerically calculated with the mathematical software.

通过分析计算得到如下结论：对于任意一个含有硬边光阑的复杂光学系统，都可以把光阑的作用从系统中"移"出来，把其看作是出射光瞳的作用，从而可以较为简便地求出观察面上的场分布。

By utilizing the cross gain modulation effect and the period 1 oscillation harmonic frequency locked in an optically injected semiconductor laser , we can extract the wavelength conversional individual channel optical clock from the optical time division multiplexing OTDM signal .

光注入半导体激光器会产生非线性单周期振荡特性，利用交叉增益调制效应及对单周期振荡的微波锁频效应，可从光时分复用信号中提取出波长转换的分路光时钟。

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。