光纤

Light from a large core multi-mode fiber is launched onto the curved surface of plano-side-silvered plano-convex lens.The reflected light is recovered by small core multi-mode fibers and serves as the means for determining the displacenient of tilt.

从一个大直径多模光纤中发射出的光，入射到一个由平凸透镜和平面镜组成的系统的曲面上，光经反射后，被小直径的多模光纤收集，经处理后确定物体的位移和转动。

In this thesis, several fiber grating-based photonics devices for optical communications and sensing applications have been investigated theoretically and experimentally.

本论文就光纤光栅在光纤通信器件及光纤传感领域的几个应用作了较深入的理论和实验研究。

Mach-Zehnder optical interferometer is widely used due to its simple structure, small size, light weight, high precision and so on.

Mach-Zehnder光纤干涉仪结构简单、体积小、重量轻、测量精度高，作为干涉式光纤传感器得到广泛应用。

A novel FBG sensor based on spoke-structure pressure box by utilizing FBG as the element sensing component is presented.

利用光纤光栅作为基本传感元件，设计研制了一种基于轮辐式压力盒装置的新型光纤光栅压力传感器。

In order to meet the need of control liquid place and oil water interface of flammability explosive medium products in cans in oil and chemical indystry. Research and develop a new-style advanced precision fiber sensor-based computer monitor system of oilcans with advanced technology of computer detection and control and modern fiber sensory.

为了满足石油、化工等易燃易爆介质制品罐群的液位及油水界面监控的需求，采用先进的计算机检测与控制技术及现代化的光纤传感技术，研发了一种新型的高精度光纤油罐液位计算机监控系统。

In simulation, we use the software called "BeamPROP 5.1" by "RSoft Design Group" to study the wave propagation in the tapered fiber and calculate the monitored power, mode profile, contour map…etc.

在模拟实验上，我们利用R-Soft公司出版的BeamPROP 5.1这套软体进行模拟。我们观察到波在拉伸光纤中的传播特性，并且讨论波经过拉伸光纤后的功率、电场分布型态、电场的等高线图…等。

248Nm zero-order nulled chirped silica phase masks are fabricated by insertion a cylindrical lens to 325nm He-Cd laser holographic system to form the chirped grating patterns on photoresist and then transfer the patterns to silica substrates by reactive ion etching.

采用在325nm He-Cd激光双光路全息干涉系统的一臂上插入柱面镜的方法和反应离子刻蚀技术研制了周期渐变的零级抑制石英相位掩模版，并用该掩模版在B/Ge双掺光纤上研制出中心波长1551nm，带宽11.4nm，反射率约60％的宽带Chirp光纤光栅。

Aimed at finding out the measure effect of fiber grating sensor under different loads, the Pushover and pseudo static experiment were carried out for three reinforced concrete bridge pier models; the strains of the steel bar and concrete as well as horizontal displacements on top of the model were measured simultaneously by using the fiber grating sensor and the strain gauge (9 groups measure contrast tests).

针对光纤光栅传感器在不同受力情况下的测量效果，选取了3个分别采用Pushover和拟静力加载的钢筋混凝土桥墩模型，运用光纤光栅传感器和电阻应变片及电阻位移计，对模型的钢筋和混凝土应变及顶部水平位移进行了同步测量（共9组测量对比试验）。

The PRE-IOG fiber analogue system, which has compact optical structure and high performance reflector to achieve re-entrant transmission, is improved.

在此基础上，研制了采用耦合器实现循环再入的PRE-IOG光纤仿真系统，验证了PRE-IOG的优化设计方法以及调制与解调电路的设计方法；改进了利用高性能反射镜实现循环再入的PRE-IOG光纤仿真系统。

Designed a set of Fiber Bragg Grating sensor system based on phase generated carrier and unbalanced M-Z interference sy- stem,it is used to check the temperature of bubble in the boiler and the reaction of rail when the machine is shearing, meanwhile, it gave its own thoughts for Fiber Bragg Grating sensor system's installing method when doing parameter measuring.

设计了一套基于相位载波零差法和非平衡M-Z干涉系统的光纤Bragg光栅传感系统，用来检测锅炉汽包温度和切削时车床床身导轨的应变，并对在参数测量时光纤光栅传感系统的安置方式提出了自己的思考。

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。