光纤

In order to analyze and design the fiber optical isolator with YIG sphere, it is necessary to thoroughly research on the coupling efficiency, the optimization and the measurement for the coupling of monomode fibers with a lens as well as the theoretical analysis and experimental measurement of "Lamipol"polarizer.

本文介绍有关光纤隔离器的一些研究内容，着重探讨一种以磁光晶体球为主体的光纤隔离器，引入Lamipol高性能薄膜偏振器，使器件调节环节少，有利于器件的小型化。

The linewidth of laser is less than 10 kHz, measured by the delayed self-heterodyne method with 10 km monomode fiber. SNR is about 56 dB.

采用10km单模光纤延迟线进行了延迟自外差线宽测量，得到光纤激光器的3dB线宽小于10kHz。

73MW output power is obtained. The slope efficiency is 55%. The 3dB linewidth of laser is less than 10 kHz, measured by the delayed self-heterodyne method with 10km monomode fiber.

采用10km单模光纤延迟线进行了延迟自外差线宽测量，得到光纤激光器的3dB线宽小于10kHz。

Compare with tunable filter detection technique, the wavelength measurement technique using tunable source is analyzed theoretically. We design a kind of all-fiber sensing interrogation system, by using long-period fiber grating as edge filter to interrogate the sensing signal of the FBG sensor. The wavelength resolution of the sensing measurement is 0.05nm.A novel FBG Bourdon tube sensor has been constructed, utilizing the pressure mechanic amplify function of Bourdon tube. The measured pressure sensitivity is two orders of magnitude higher than a simple monomode fiber with an in-fiber grating. Especially the pressure sensitivity of the sensor can be determined by changing the parameters of the cantilever beam. Adopting polymer package technique, we coat fiber Bragg grating by using polymer with different mechanic properties.

利用波登管对于压力的机械放大作用，研制了一种新颖的光纤光栅波登管压力传感器，将FBG的压力灵敏度提高了两个数量级，特别是这一传感器的压力灵敏度的大小可以通过改变悬臂梁自身的参数灵活控制；采用聚合物封装技术，将FBG封装于具有不同力学特性的有机聚合物基底中，利用基底的带动作用，将FBG对压力的灵敏度分别提高了20倍和31.7倍，由于我们采用了特殊的工艺，封装后的FBG不出现任何光栅啁啾；在成功封装的基础上对封装光栅的蠕变效应、FBG与封装材料之间的防滑处理等进行了实验研究；设计了外加圆柱形铝管的聚合物封装光纤光栅，将FBG的压力灵敏度提高了1430倍，可用于对微小压力变化的精确测量。

The invention can be applied to not only unimode optical fiber but also multimode optical fiber.

本发明不仅能应用于单模光纤，也能适用于多模光纤。

So a research upsurge for sponge spicules on micro-structure, characteristics, growth mechanism and mediation are quickly arising.

近年科学家发现了海绵骨针的光纤特性，特别是指出了这些特性可能引导人类开发新的光纤制造方法，从而引发了对其微结构、特性、生长机制与调控的生物学、生矿物学和仿生学的研究热潮。

Through studying the structure, the characteristic, the growth mechanism and mediation in sponge spicules, scientists are learning a new biotechnological route to produce electronic and optical nanomaterials in an environmentally benign way.

近年来，人们发现了硅质海绵骨针独特的微结构及良好的光纤特性，特别是指出了这些特性给人类带来制造光纤的新思路，并很快引起了科学家对其结构、特性、生长机制与调控的生物学、生矿物学和仿生学的广泛研究兴趣。

EC 22. Lead as impurity in RIG Faraday rotators used for fibre optic communications systems.

在光纤通讯系统中的稀土铁石榴石法拉第旋转器中的杂质铅；在光纤通讯系统中的稀土铁石榴石法拉第旋转器中的杂质铅

This article analyzes the problems,such as the time delay and error code characteristic of optic fiber channel,path switching mistake caused by maintenance staff and improper parameter setting on 2 M channel retiming,which will produce negative influence on protection system.

文章分析光纤通道时延、误码特性、人为造成的通道倒换方式选择错误、2 M通道重定时参数设置不当等问题，研究这些问题给保护系统带来的负面影响，提出了光纤保护对通道的要求及注意事项。

Two kinds of self-made PCF were used, and an effective fusion scheme was adopted to perform the splicing experiments. By combining experiments and numerical calculations, reasonable fusion parameters were set up and the mode fields at each fiber′s end face were rescaled.

基于一种高效的低损耗熔接方案，将理论计算与实验测量相结合，选取合理的熔接参量对光纤端面模场进行重塑，使两光纤端面模场匹配程度大大提高，从而实现了对称结构与非对称结构PCF之间、以及两种非对称结构PCF之间的低损耗、高强度的熔接。

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。