• A vector theory for diffraction of multi step phase grating is presented.

    采用矢量理论处理了台阶位相光栅衍射问题。

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  • In this paper. A phase grating for optical disk system has been de-signed.

    本文设计出一种用于光盘系统位相光栅

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  • This expression is suitable for oil fi-lm phase grating with arbitrary form.

    这个表达式适用任意形状膜位光栅

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  • In this paper, a generated method of 2-d binary phase grating by chemistry etching is presented.

    本文介绍化学蚀刻方法制作二二元位相光栅

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  • The efficiency of phase grating is limited by groove depth, material, duty ratio and wavelength.

    衍射效率光栅材料凹槽厚度占空所使用波长的影响。

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  • 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相位光栅产生的并四波过程

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  • 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主要因素槽深、占空比反射率;

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  • The moveable grating and the bottom mirror compose a phase grating whose phase difference is controlled by the actuating voltage.

    上层可动光栅下层反射镜构成一个光栅,相位外加驱动电压控制

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  • In this system, phase grating is formed after photoinduced trans-cis isomerization occurs on azo polymer and it separates with the liquid crystal.

    体系中的偶氮聚合物光诱导下发生反式异构形成液晶分离光栅

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  • 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屏幕投影系统讨论了液晶相位光栅的基本衍射特性

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  • The series density formulae of the binary phase grating are obtained from the general complex amplitude transmittance formulae through Fourier integral.

    它直接物体振幅透过一般公式出发,运用傅里叶积分求得二进制位光栅各级衍射光强度通式

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  • 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.

    本院精密计量室初试成功周期位相光栅精密测试提供了元件

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  • 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.

    本文借助于栅理论琼斯矢量综述其机理方面的理论与实验研究工作,举例说明基于旋转向各种测试手段信号叠加方案的一般分析方法。

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  • 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,形成空间相位光栅,可以改变光波光导纤维中的传输路径

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  • 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.

    一位光栅相干光学处理系统频谱平面,利用零级一级衍射相干加实现图象相减

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  • 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分析,并利用位型的全息双频光栅的太保效应进行复制光栅测定透镜焦距等。

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  • 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相位掩模衍射特性进行了深入的研究。

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  • 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.

    运用严格光栅衍射耦合理论分析光栅衍射特性发现方案不会引入相位畸变

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  • Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.

    光栅对比度空间频率显示时间移动速度频率能单独控制

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  • The main devices of the method include a grating interferometer, which controls the ruling engine motion, and a phase scanning mechanism.

    方法主要装置包括用于控制刻划运动光栅干涉仪一个相位扫描机构。

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  • Furthermore, the paper offers the error limited of these parameters and they are good to guide practical fabrication of the volume phase holographic grating.

    同时本文还计算出几种参数误差体积相位全息光栅实际制作具有指导作用

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  • It is noteworthy that the wavelength of the fiber Bragg grating would be tuned via only a phase mask in a phase mask interferometer.

    值得注意相位干涉法只用一块相位模板可以调整写入光纤布拉格光栅波长

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  • Fabrication of the Bragg grating in a highly nonlinear photonic crystal fiber was investigated experimentally by phase mask method.

    采用相位掩模版实验研究非线性掺锗光子晶体光纤布拉格光栅制作

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  • 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.

    改变数字光栅相位实现莫尔条纹扫描,用多幅扫描图像算出光斑图像整体中心

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  • In order to achieve high resolution in grating angles measuring system, phase fine division is adopted generally.

    为了使光栅系统获得较高分辨率通常采用鉴相式电子细分

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  • 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栅距光栅的刻划实验,并对刻划误差进行了初步的分析

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  • 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.

    提出了用布拉格光纤光栅相移实现低功率的光标交换方法设计一个基于该方法的标记交换实验

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  • 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变形光栅图像不仅减少了实物参考面的采集步骤而且需要实物参考面相位进行求解

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  • The virtual grating phase shifting moire fringe is a method to manipulate the static interferogram with carrier fringes.

    光栅莫尔条纹法一种静态干涉图处理方法

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  • 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变形光栅图像不仅减少了实物参考面的采集步骤而且需要实物参考面相位进行求解

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