光纤

Experimental accuracy and repetition of FBG temperature sensitivity and compensation were discussed.have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber;have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of FBG wave-length, have obtained the first step conclusion;have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes.

本文所做的主要工作包括以下几个内容：一、选取了常见的热膨胀系数大的材料制作封装元件，经过多次一80℃到80℃反复测试，封装元件没有出现老化开裂、封装裂纹、空洞、离层等缺陷，封装材料具有良好的温敏稳定性及复用性，与光纤相容性较好；二、对光纤光栅进行简单、实用的封装处理，就封装效果的优劣性、波长测量的准确度、重复性和封装时产生的波长损失等方面进行了一系列的实验，得出了初步的结论；三、对温敏和温度补偿式封装的实验数据进行了详细的分析和对比，从数字上对温变过程中光纤光栅中心波长的改变及温变曲线进行了定量的分析，在大量实验数据分析结果的基础上，总结出哪种材料封装效果更好，以及如何有效的减小实验误差。

The microstructure fiber based laser devices have outstanding performance comparing with the normal fiber based laser devices because of the flexible and various airhole microstructure.

由于微结构光纤灵活多变的结构特点，使得以其为增益介质的光纤激光器件，具有比普通光纤激光器件更加优异的性能。

Many types of optical transmission, and here I step on the weak-guided wave fiber wave equation to study and understand the step-index optical waveguide mode, are second-order differential equations Bessel equation.

光纤传输的种类很多，在这里我只对阶跃型弱导波光纤波动方程进行研究，了解阶跃折射率光纤的波导模式，得到二阶微分方程Bessel方程。

The basic structure of the invention are that: two optical fibers the end surfaces of which are plated with high reflection films, the tops of one or two plating optical fiber end surfaces are produced with a micro lens, the plating optical fiber end surfaces are mutually level and parallel so as to form the lenticular optical fiber Fabry-Perot interferometer.

本发明的基本结构为：两根端面镀高反射膜的光纤，其中一个或两个镀膜光纤端面上制作有微透镜，镀膜光纤端面相互对准、平行构成微透镜光纤法布里-珀罗干涉仪。

The theoretical method presented here can be employed to forecast the shift of the resonance wavelength, and to help the design and fabrication of the metal-coated LPFG.

标 签 导波与光纤光学长周期光纤光栅金属包层光纤三层介质光纤包层模 guided wave and fiber optics long-period fiber grating metal-coated fiber three-layered optical fiber cladding modes

"Core alignment splicers have long been the preferred method for CATV installations, backbone networks, specialty fiber applications, and optical components manufacturing largely because of their high accuracy and reliability," says Jason Greene, manager of fusion splicer products for Furukawa America."The portability of the S177A brings the benefits of core alignment to the growing construction of fiber-to-the-home and other space-constrained fiber optic cable installations."

Furukawa美国公司光纤融接机产品经理Jason Greene先生表示，由于具有芯部对准功能的融接机有很高的稳定性和准确性，所以它对于有线电视的安装、骨干网、特殊光纤的应用以及光学元件的生产来说是一种非常重要和必需的工具；而S177A的便携式功能和设计也为不断增长的光纤到家和其它长远距离的光纤安装需求带来了更多的便利。

The EIM was introduced at first. By solving the scalar wave equation within cladding of TIR-PCF, the fundamental space-filling mode and the effective index of the cladding were calculated. The logical effective radius was selected, and the propagation properties of TIR-PCF were discussed with the classical theory of step-index fiber.

深入研究了有效折射率模型的构造，通过求解标量波动方程得到了光子晶体光纤包层基空间填充模，得出光子晶体光纤的包层有效折射率；选择了较合理的有效半径，利用经典的阶跃光纤理论来研究光子晶体光纤的传输特性。

Study on error code performance of relay protection signal over optical fiber channel ;2. Some suggestions for the protection with the optical fiber channel construction and the maintenance are proposed.

分析了山西电网中以光纤作为保护通道的优越性，针对不同的线路保护采用不同种类的光纤保护方式，并对光纤保护设备在安装、调试及日后维护过程中出现的问题进行分析，为保护用光纤通道的建设及维护提一些建议。

A multiclad layer optical fiber prefabricated rod includes core rod and outer clad layer; the core rod consists of core layer, inner clad layer and low-hydroxyl high-purity clad layer in sequence, and the outer clad layer includes a high-purity outer clad layer and a subhigh-purity outer clad layer.

本发明涉及光纤制造领域中一种多包层光纤预制棒及制造方法，它包括芯棒和外包层，芯棒由芯层、内包层、低羟基高纯包层依次组成，外包层分为高纯度外包层和次高纯度外包层，它解决了现有的光纤制造技术中，光纤预制棒的外包层所使用的高纯原材料比重过大，从而导致高纯原材料利用率低、制造成本高的问题。

In this paper, progress of FBG sensing system demodulating technology in recent years was reviewed, problems exist in this field were analyzed, according to actual requirement of FBG sensing system, existing signal demodulating technology of FBG sensing system were classified combined with FBG sensing technology, on the basis of this, demodulating technology using amplified spontaneous emission light source linear sidebands and it's operational principle were introduced, temperature and strain sensing experiments were made based on the technology.

本文回顾了光纤光栅传感信号解调技术近年来的进展，分析了该技术领域存在的问题，结合光纤光栅传感技术，针对光纤光栅应变传感系统的实际需要，对现有光纤光栅传感信号解调技术进行了分类。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。