查询词典 Bragg diffraction

The threshold gain versus pair number of top Bragg mirror in the two situations is compared with that in the case of perfectly conducting metal cylinder.

从模式的阈值增益与顶Bragg反射镜层周期数的关系方面，与理想金属外包壳情况进行了比较。

High-dielectric-constant perovskite CaCu3 Ti4O12 , The method features the simultaneous acquisition of shadow images within many Bragg reflections, resulting in Parallel Recording of Dark-field Images.

该技术是在透射电子显微镜中把电子束聚焦在样品的上方从而在很多Bragg衍射盘中得到阴影像。

Improvement of Wavelength Interrogation for Fiber Bragg Grating Laser Sensor System Based on 3×3 Couplers.

基于3×3耦合器的光纤光栅激光传感系统波长解调方案的改进。

Bragg matched and detuned uniform gratings as well as non uniform gratings have been analyzed by using this method.

用这一方法计算了均匀光纤光栅布拉格相位匹配、失配情况和非均匀光纤光栅的反射系数，并将其结果与用耦合波理论、Rouard方法以及基础矩阵方法的结果进行了比较，并检验了这些方法的精度。

The UN's Deputy Humanitarian Chief Catherine Bragg said it would be impossible to fill the gap left by the expulsions.

联合国人道主义副主任凯瑟琳布拉格表示，修复因驱逐而留下的损害是不可能的。

The pressure responses of polymer packaged fiber Bragg grating sensor are analyzed, a special kind of pressure-resistant polymer is used to coat FBG in a metal tube. A kind of soft elastic material is used to reduce the friction between tube and polymer, and to eliminate chirp effect caused by different friction distribution to improve the pressure response of FBG.

分析了聚合物封装光纤光栅的压力响应特性，通过采用特殊聚合物材料将光纤光栅封装于金属套管中，并通过在金属套管预涂覆一层软弹性材料，以消除封装过程中由于聚合物固化收缩以及聚合物与套管壁粘接与摩擦产生的光纤光栅啁啾化，改善了光纤光栅压力响应特性。

The temperature response and sensitivity enhancing technology concerning fiber Bragg gratingis analyzed.A special kind of heat-resistant polymer is used to coat FBG to enhance the temperature sensitivity of FBG sensor.The polymer coating and solidifying process of FBG is improved.A kind of heat-conducted adhesive is used to reduce the friction between tube and polymer,and eliminate the chirp effect of FBG caused by the asymmetric shrinkage of polymer during the package process.The experimental results show that the FBG sensor can measure temperature from 20℃to 180℃.

简要分析了光纤布拉格光栅的温度响应及增敏原理，采用特殊耐高温有机聚合物对光纤光栅进行温度增敏封装，并通过改进光纤光栅的聚合物封装固化工艺，使用某种有机硅导热胶减小有机聚合物与套管材料的粘合度，消除了封装过程中由于聚合物材料不均匀收缩引起的光纤光栅反射谱啁啾化，实现20~180℃范围内光纤光栅传感器对温度高灵敏度测量。

In view of the lack of effective methods for the measurement of internal force under the construction loads and the long-term monitoring in service of steel tie rods, a novel high-durable smart steel tie rod based on the fiber Bragg grating absolute measuring technology and packaged by glass fiber reinforced plastic was developed.

针对目前钢拉杆构件缺少施工荷载下的内力测试和服役期间的长期监测手段问题，采用玻璃钢封装技术研制开发出一种新型的基于光纤光栅绝对测量传感技术的高耐久性智能钢拉杆。

For temperature controlling dispersion compensator, fiber Bragg grating is dealt with by the metal-coated processing.

通过电流调谐，可以获得调谐范围在2.3nm的可调谐滤波器件，并对温度调谐器件的时间响应进行研究。

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。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。