光纤

The output capability of large mode area multimode fiber laser depends on the fiber bending.

大模场面积多模光纤激光器的输出性能与光纤的弯曲程度有关。

It introduces the process of getting ultra-short pulse using a gain switched quantum well DFB laster as signal pulse source,the method of obtaining OTDM signal and extracting short pulse through the technique of extracting light-pulse which apply to high-speed OTDM system.

介绍了采用掺铒光纤放大器获得超短脉冲；利用方程差微调法获得光时分复用信号和易于实现动态色散补偿的啁啾光纤光栅实现色散补偿，以及通过适于高速光时分复用系统的光时钟提取技术提取时钟脉冲等内容。

Based on the traits of the aspherical lens, the sunlight was focused on a very small spot, and then it was transferred into a plastic fiber by an aspherical lens and a selfoc lens. A formula for calculating the optimal length of selfoc lens is presented. The optimal assembly of the aspherical lens and selfoc lens was implemented by the aid of this formula. Therefore, sunlight is coupled into a plastic fiber efficiently.

根据非球面透镜垂轴球差小的特点把太阳光会聚到很小的光点，再利用长度约为1/4节距的自聚焦透镜改变光线的数值孔径使其满足光纤的数值孔径，通过一个计算公式来计算最佳的自聚焦透镜长度，实现非球面透镜和自聚焦透镜的最佳组合，把太阳光以较高的耦合效率耦合进塑料光纤。

A beam splitter is mounted on the substrate on a center line between elongations of the optical fibers, and light emitted from the lens portion propagates through space and is launched in focused form into the beam splitter, and a portion of the incident light is reflected, which propagates space and is launched in focused form into the lens portion and propagates through the optical fiber.

分光器(31)安装在基底(11)上并位于光纤(21)和(22)延长线之间的中心线(25)上，从透镜部分(21a)发射的光穿过空间并以聚焦的形式入射到分光器(31)，一部分该入射光被反射，该光穿过空间并以聚焦的形式入射到透镜部分(22a)、并穿过光纤(22)传送。

D. Personick, of calculating the sensitivity of the digital optic receiver, the optimal gain of APD and the decision level, is based upon the waveform of input light pulse at the receiver.

本文提出以易于确定的发送端光脉冲波形及光纤展宽参σ＇作为计算出发点，并假定光纤对光脉冲的响应为高斯函数。

And the fiber laser with narrow linewidth is a hot research topic.

而窄线宽光纤激光器是光纤激光器发展的一个热点方向。

Then, an equivalent circuit for Rogowski coil loading piezoelectric cylinder is constructed, and the circuit experimentally verifies its advantages for current/voltage conversion.

本文正是在此背景下系统地阐述了光纤电流传感器的发展及存在的问题，在光干涉理论的基础上，提出了相位压缩原理，并成功地设计了一种新型干涉式光纤电流传感器。

Optical fiber magnetic field sensor is obtained by coating the TbDyFe film around the naked polarization maintaining fiber by mean of DC magneton sputter technology.

通过直流磁控溅射镀膜，将磁致伸缩材料———铽镝铁被覆在一段去掉保护层的保偏光纤上，得到铽镝铁被覆保偏光纤结构的磁传感单元。

The standard deviation of maximum temperatures in fiber segments was incorporated into evaluation function.

评估函数中引入了每段光纤中最高温度的标准方差，以确保每段光纤中的最高工作温度是相同的。

This paper is focusing on the setup of non-contact automatic measurement for the end face of fiber connector by applying micrography and image processing technology.

介绍了一个基于显微成像和数字图像处理技术的非接触式光纤连接器端面自动检测系统：待测的光纤连接器固定于显微平台上，CCD接收显微物镜放大的图像并输入计算机中，然后由系统软件自动对图像进行对比度增强，二值化，平滑去噪，图像分割等处理，从而分析计算出纤芯、包层的各项几何参数。

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。