A vector theory for diffraction of multi step phase grating is presented.
采用矢量理论处理了多台阶位相光栅的衍射问题。
This expression is suitable for oil fi-lm phase grating with arbitrary form.
这个表达式适用于任意形状的油膜位相光栅。
In this paper, a generated method of 2-d binary phase grating by chemistry etching is presented.
本文介绍用化学蚀刻的方法制作二维二元位相光栅。
The efficiency of phase grating is limited by groove depth, material, duty ratio and wavelength.
衍射效率受光栅材料、凹槽厚度、占空比和所使用波长的影响。
The degenerate four-wave mixing process due to thermal phase grating in nematic liquid crystals is studied.
本文研究了向列相液晶中热致相位光栅产生的简并四波混频过程。
Alignment signal of phase grating alignment mark and the factors of influece of alignment signal are analysed secondly;
其次分析影响相位光栅对准标记衍射效率的主要因素槽深、占空比和反射率；
The moveable grating and the bottom mirror compose a phase grating whose phase difference is controlled by the actuating voltage.
上层可动光栅与下层反射镜构成一个位相光栅，其相位由外加驱动电压控制。
In this system, phase grating is formed after photoinduced trans-cis isomerization occurs on azo polymer and it separates with the liquid crystal.
该体系中的偶氮聚合物在光诱导下发生顺反式异构形成与液晶分离的相光栅。
In this paper, liquid crystal phase grating large screen protection system is introduced, and its fundamental diffraction characteristics are discussed.
本文介绍了一种液晶相位光栅大屏幕投影系统，讨论了液晶相位光栅的基本衍射特性。
The series density formulae of the binary phase grating are obtained from the general complex amplitude transmittance formulae through Fourier integral.
它直接从位相物体振幅透过率的一般公式出发，运用傅里叶积分，求得二进制位相光栅各级衍射光强度的通式。
This single period layered phase grating, which has been tried out successfully for the first time by our institute, provides a kind of new element for the precision measurements.
由本院精密计量室初试成功的单周期层状位相光栅，为精密测试提供了一种新元件。
Based on the layered phase grating and revolving field discrimination, a laser Doppler vibrometer system has been studied which provides a potential method of velocity measurement.
本文借助于层栅理论和琼斯矢量综述其机理方面的理论与实验研究工作，并举例说明基于旋转场辨向各种测试手段中信号叠加方案的一般分析方法。
Optical fibre grating utilize photosensitive characteristic to form the space phase grating in the core, it can change the transmission route of the light wave in the light-transmitting fibre.
光纤光栅是利用光纤材料的光敏性，在纤芯内形成空间相位光栅，它可以改变光波在光导纤维中的传输路径。
With a phase grating located at Fourier frequency plane, optical image subtraction is obtained as a result of the coherent superposition of the zeroth and the first order of the diffracted light.
置一位相光栅于相干光学处理系统频谱平面，利用其零级与一级衍射光的相干迭加实现图象相减。
The Angle spectrum analysis of self-image of double frequency grating is given. The grating duplication and the measurement of lens focus are obtained by Tablot effect of holographic phase grating.
本文给出了双频光栅自成象的角谱分析，并利用位相型的全息双频光栅的太保效应来进行复制光栅和测定透镜焦距等。
The diffraction characteristics of the phase mask for UV-written fiber grating is investigated using rigorous coupled-wave theory.
本文利用严格耦合波理论对用于光纤光栅制作的相位掩模的衍射特性进行了深入的研究。
The rigorous coupled-wave theory is used to analyze the characteristics of grating diffraction, and the results indicate that this method produces no phase distortion.
运用严格的光栅衍射耦合波理论分析光栅的衍射特性，发现该方案不会引入相位畸变。
Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.
每组光栅的对比度、空间频率、显示时间，移动速度和反相频率能单独控制。
The main devices of the method include a grating interferometer, which controls the ruling engine motion, and a phase scanning mechanism.
该方法的主要装置包括一个用于控制刻划机运动的光栅干涉仪和一个相位扫描机构。
Furthermore, the paper offers the error limited of these parameters and they are good to guide practical fabrication of the volume phase holographic grating.
同时，本文还计算出了这几种参数的误差容限，这对体积相位全息光栅的实际制作具有指导作用。
It is noteworthy that the wavelength of the fiber Bragg grating would be tuned via only a phase mask in a phase mask interferometer.
值得注意的是在相位干涉法中，只用一块相位模板，就可以调整写入光纤布拉格光栅的波长。
Fabrication of the Bragg grating in a highly nonlinear photonic crystal fiber was investigated experimentally by phase mask method.
采用相位掩模版法实验研究了高非线性掺锗光子晶体光纤中布拉格光栅的制作。
Changing the phase of digital grating can realize Moire fringe scanning. The global center of beam pattern can be calculated by multi_frame scanning images.
改变该数字光栅的相位，可实现莫尔条纹扫描，用多幅扫描图像可算出光斑图像整体中心。
In order to achieve high resolution in grating angles measuring system, phase fine division is adopted generally.
为了使光栅测角系统获得较高的分辨率，通常采用鉴相式电子细分。
Make the ruling experiments for VLS grating using the phase scanning method. Analyze the ruling error primarily.
采用相位扫描方法进行了变栅距光栅的刻划实验，并对刻划误差进行了初步的分析。
We put forward a new method to realize optical label switches using the phase shifted effective in Bragg phase shifted grating and device a experiment to achieve optical label switching.
提出了用布拉格相移光纤光栅中相移来实现低功率的光标交换的新方法。设计了一个基于该方法的光标记交换实验。
It's unnecessary to collect deformed grating images of object reference plane, which reduces operation steps and takes no solution for the phase of object reference plane.
由于不需另外采集实物参考面变形光栅图像，不仅减少了实物参考面的采集步骤，而且不需要对实物参考面相位进行求解。
The virtual grating phase shifting moire fringe is a method to manipulate the static interferogram with carrier fringes.
虚光栅移相莫尔条纹法是一种对静态干涉图的处理方法。
For unnecessary to collect deformed grating images of object reference plane, it reduces operation steps and takes no solution for the phase of object reference plane.
由于不需另外采集实物参考面变形光栅图像，不仅减少了实物参考面的采集步骤，而且不需要对实物参考面相位进行求解。
Using only one optic element, the phase mask provides a robust and inherently stable method for reproducing fiber Bragg gratings, and reduces the complexity of the fiber grating fabrication system.
由于相位模板法仅使用一个光学器件，因而减少了光纤光栅制造系统的复杂性，是光纤布拉格光栅写入法中最有前途、使用最广泛并且具有本征稳定性的一种方法。
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