相移

Beginning with wave equation, the paper has deduced the propagation of gauss pulses in single mode fiber and fiber grating transmission compensation. The characteristics of cascaded phase-shift gratings are discussed by numerical simulations of coupled-mode theory and T-matrix method. The experimental works and measurement results are shown in this paper. On the other hand, we have introduced the basic theory of EDFA and figured out the characteristics for EDFA at different conditions by numerical simulation. Some experimental results for EDFA are also presented here. In this article, you can find the influence on Optical Fiber Amplifier by Gain Tilt, especially, the negative effect on CSO in CATV transmission system.

论文首先从波动方程入手，对高斯脉冲在单模光纤中的传播演化及光纤光栅透射补偿进行了详细的研究；较系统地介绍了光纤光栅的耦合模理论，并将传输矩阵计算法用于计算级连相移光纤光栅的光学特性；重点介绍了作者在光纤光栅刻制及特性测量方面所做的一些实验研究工作；较系统介绍了EDFA的基本理论，计算出各种条件下EDFA的光学特性，并进行了一些实验研究；综合分析光纤放大器对光纤传输系统的影响，特别分析了光纤放大器增益不平坦对光纤CATV系统中CSO恶化的原因及其解决方法，并研究了光纤布拉格光栅在稳定980nm泵浦源输出功率和输出波长方面的应用；结合一个基于光纤光栅和光纤放大器的光纤用户接入网方案，对光纤用户接入网的若干问题进行了理论与初步的实验研究。

When this network—the Wien Bridge—is used as a positive feedback element around an amplifier, oscillation occurs at the frequency at which the phase shift is zero.

这个 电路就是"文氏桥"，如果以文氏桥作为放大器的正反馈路径，那么当相移等于 0 的时候，就会出现振荡。

In this thesis, the various property of LC is studied. The feasibility of using the LC cell as phase-shifter in the DSSPI is analyzed by theory. The new phase-shifting and shearing theory based on LC and Wollaston prism is developed.

本文对液晶的特性进行了深入研究，充分利用其电光效应，把它和渥拉斯顿棱镜结合成一体化系统，提出了一套基于液晶体和渥拉斯顿棱镜的相移错位理论。

Because two shearing object beams travel in the same direction when Wollaston prism is used as image-shearing device in traditional speckle shearing interferometry.

在沃拉斯顿棱镜作为剪切器件的传统剪切散斑干涉术中，由于错位的二物光束同光路传播，很难通过将它们分开来引入附加相位的方法实现相移。

What small success I have had has been the product of rigorously applied Multiphasic Empathic Ontogenic Work.

小成功是什么我已经一直是产品的严格适用多相移情Ontogenic工作。

Fibre optic sensors ; Optical interferometers ; Homodyne ; Phase shift

光纤传感器；光学干涉仪；零差；相移

Analysis and experiment of phase-shifting coaxial lensless Fourier digital holography .

相移同轴无透镜傅里叶数字全息的分析与实验。

The studies of premagnification and phase-shifting lensless Fourier digital holography［J］.

预放大相移无透镜傅里叶变换显微数字全息术的研究［J］。

Analysis and experiment of phase-shifting coaxial lensless Fourier digital holograph.

相移同轴无透镜傅里叶数字全息的分析与实验。

Microscopically, multinodular proliferation of benign-appearing hepatocytes separated by bile-duct-containing fibrous septae that radiate from the central scar.

结节周边肝细胞与纤维间隔内增生的胆小管细胞相移行，这些肝细胞与增生的胆小管细胞角蛋白的表达情况相似。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。