光纤

A novel fiber optic sensor based on the principle of Fresnel reflection is presented in order to develop a robust, flexible and low cost cure monitoring sensor.

将光纤的一段包层去掉构成光纤迅衰波折射率传感器，通过测量环氧树脂在固化过程中折射率的变化进行固化监测。

In the thesis, theoretical and experimental research on all-fiber pulsed fiber amplifier is presented.

本文将从理论和实验两方面对全光纤化脉冲光纤放大器进行研究。

The test results demonstrated that this MOEMS accelerometer could support more than 30g acceleration load and its static optical intensity sensitivity is about 624.7mV/g, which is related to Q-factor of the microfiber loop resonantor and MEMS structure parameters.

而相关研究表明微光纤环形谐振腔的Q值还有较大的提升空间，随着微光纤环Q值的提高(从目前10~3增加到10~6)，该MOEMS加速度传感器的探测灵敏度还将大幅提升。

The research of the mirofiber loop resonantor demonstrated that the Q-factor of microresonantors created by microfibers could potentially compete with the extremely high-Q and much low-loss whispering gallery mode microcavities.

提出了本文的主要研究内容、研究目标以及主要创新点。2、详细介绍了亚微米直径微纳光纤的传输理论和制作方法，并分析了微纳光纤的物理特性。

Quadruplex system has greatly saved the resource of optical fiber and induced the cost per video channel.

四路视频的单光纤传输大大节约了光纤线路资源，有效地降低了单路视频的成本。

According to the theory results,the two orthogonal polarized states of the fundamental mode become non-degenerate in this fiber and modal fields are quasi rectangular with appearing strongly linear polarization.And,the birefringence of the fiber was found to be due to the asymmetry of cladding structure.If the rate η between lognitudinal and transverse holes-spacing is reduced,the birefringence will increase strongly.

结果发现，矩形点阵微结构聚合物光纤基模两个正交偏振态不再简并，模场呈现类矩形且具有较强的线偏振特性；该光纤模式双折射产生于包层孔结构分布的不对称性，减小包层纵向孔间隔和横向孔间隔之比η值，双折射明显增强，适当调节η，可在更宽频带范围内实现高双折射单模运行。

Based on the elasticity theory axial symmetry question quasi static, the back lining material stress characteristics were analyzed. Using photoelastic theory and thermal stress theory, the influence of temperature to the optical fiber phase constant was analyzed.

首先从弹性力学轴对称问题的准静态理论出发分析了背衬材料的应力特性，并用光弹理论及热应力理论分析了温度改变对光纤相位常数的影响，得出了温度影响干涉式光纤水听器光学相位输出的数学表达式。

Given other certain parmeters,the effect of quintic nonlinearity on the chirp of the Gaussian pulse and soliton was considered and compared.

在波分复用系统中，由于一根光纤可以传输多路光脉冲，因此，WDM是当前光纤通讯领域研究的主流技术。

Finally, We analyze and experimentally demonstrate that both the bandwidth of the fiber Bragg grating's short wavelength loss and the bandwidth of fiber Bragg grating's reflection increase with the increase of strain gradient along the length of grating.

最后，我们对光纤光栅的反射和短波损耗的应变特性作了理论分析和实验测试，发现在光纤光栅的反射带宽随光栅轴向应变梯度的增加而增加的同时，光栅短波损耗带宽也随光栅轴向应变梯度的增加而增加。

So chirped fiber gratings have broad reflection bandwidth. The group delay in chirped fiber grating reflection bandwidth changes gradually. These properties are what other type fiber gratings do not have.

所以chirped光纤光栅具有宽的反射带宽，在反射带宽内具有渐变的群时延等其它类型的光纤光栅所不具备的特点。

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。