查询词典 fiber-optic

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。

In recent years, the fiber grating external cavity semiconductor laser regarded as one of the candidate light sources of DWDM systems, has received considerable attention. Usually, it is thought that the lasing wavelength of a FGESL is locked at the Bragg reflection wavelength of fiber grating.

由于FGESL的激射波长主要由光纤光栅的布拉格波长确定，因此选择具有合适布拉格波长的FG就能使FGESL的激射波长处于预置波长处；同时，由于FG的布拉格波长受温度变化的影响相对较小(～0.01nm／℃)，因此FGESL与DFB-LD相比具有更高的温度稳定性。

In discussing the properties of reflection and refraction of fiber grating, the coupled-mode equation, envelope function, transform matrix formalism, multilayer and optical path approximation are used for describing the linear and nonlinear characteristic of optical fiber grating.

在分析光栅的反射和透射规律时，采用了耦合模式法，包络函数法，转换矩阵法，多层介质薄膜法以及光程法，这些方法虽然具有不同的数学和物理模型，但在分析光纤光栅这一特殊的波导结构时，可充分展现它的线性和非线性特性。

The distributed optical fiber sensors based on optical time domain reflectometry are the easiest ones to become products in all these distributed optical fiber sensing technology.

而在众多分布式光纤传感技术中，基于光时域反射计的分布式光纤传感器是最容易实现工程化、产品化的技术。

This paper introduces the classification of fiber reinforced concrete and fiber composite materials in the role.

本文简要介绍了纤维混凝土的分类及纤维在复合材料中的作用。

The fiber art is a kind of material art. At one level, the representability of the material can determine the form and the style of fiber art.

纤维艺术是材料的艺术，材料的表现力从某种程度上决定了纤维艺术的形式与风格。

It was shown that the asymmetry in the elastic modulus results from the compressive residual stress in the fiber root and the asymmetry in the yield strength results from the tensile residual stress in the matrix and compressive residual stress in the fiber.

分析表明，纤维根区域的压缩残留应力造成弹性模量的不对称性，基体拉伸残留应力和纤维的压缩残留应力造成屈服强度的不对称性。

In this article we analysed the characteristic of two kinds of modified melamine resin fiber which are PVA and Resorcin modified melamine resin fiber.

分析了聚乙烯醇和间苯二酚两种改性三聚氰胺树脂纤维在表面结构性能，物理性能，热性能等方面的改进以及固化剂的添加对纤维性能的影响。

Scan lining, and create checks in gauze, double plastic at the excess moisture is absorbed ring lining will result in a change (because fiber paper water absorption or pre-polymer, the paper fiber will change in radial), and smaller variation, so that the ring extension thefibers radial lining.

扫衬时，往往在纱布处施以倍胶，过多的水分被环衬吸收后将导致纤维发生变化(因为纸张吸水或失水后，纸张纤维将在径向发生变化)，而纵向变化较小，使环衬沿纤维径向延展。

Road Products business unit Acting Anti-stripping of asphalt, asphalt emulsifier, to taste asphalt of the road with wood fiber, polyester fiber road, asphalt Transporter release agent, and other products.

路用产品部门主要代理经营沥青抗剥落剂、沥青乳化剂、沥青去味剂、路用木纤维、路用聚酯纤维、沥青运输车脱模剂等产品。

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。