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Moire光纤光栅的原理及应用 被引量:1
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作者 赵春柳 冯德军 +5 位作者 丁镭 张颖 董新勇 张伟刚 袁树忠 董孝义 《光通信技术》 CSCD 北大核心 2000年第4期280-284,共5页
Moire光纤光栅是近几年出现的新型光纤器件 ,有其特有的性质 ,被广泛用于波分复用系统( WDM)中的多带通滤波、色散补偿以及通道选择等方面。文中系统介绍了 Moire光纤光栅的原理和工作特性 ,同时介绍了最新的研究动态。
关键词 moire光纤光栅 多带通滤波 滤分复用系统
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物理光学方法分析Moire偏折法
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作者 王海林 苗鹏程 +1 位作者 阎大鹏 贺安之 《激光技术》 CAS CSCD 1991年第6期335-340,共6页
本文在物理光学领域里,严格分析了 Moire 偏折法的测试原理和特性,获得了一些关于 Moire 偏折法的新的和严格的结论。实验证实了本文的结论。
关键词 物理光学法 moire 偏折法 分析
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基于啁啾Moire光纤布拉格光栅的波分复用/解复用器件的理论分析(英文) 被引量:1
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作者 王燕 胡菊菊 叶志清 《江西科学》 2005年第1期18-20,24,共4页
对基于啁啾Moire光纤布拉格光栅的波分复用/解复用器件进行了理论分析。用传输矩阵法计算了Moire光栅的透射谱特性,可知其透射谱具有多个通带及好的通道隔离度。通过调整光栅参数可获得通道间隔满足国际电信联盟标准的Moire光栅。
关键词 啁啾moire光纤布拉格光栅 波分复用/解复用 透射谱
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啁啾Moire光栅波分复用/解复用器件的理论分析
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作者 邹道文 王燕 叶志清 《光子学报》 EI CAS CSCD 北大核心 2003年第4期455-457,共3页
根据耦合模理论 ,用传输矩阵法计算了啁啾Moire光栅的透射谱特性 ,分析表明其透射谱具有多个通带及好的通道隔离度
关键词 啁啾moire光栅 透射谱特性 波分复用/解复用器件 光纤通信
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哺乳类动物臼齿的Moire等高线研究
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作者 张人骧 张葵 张亮 《兽类学报》 CAS CSCD 北大核心 1989年第1期24-26,共3页
哺乳类动物的臼齿形态与食性的关系十分密切,而对于齿型的判别一直依赖于直观的经验观察,缺乏实验资料。本文根据对刺猬、犬蝠、松鼠、裼家鼠、黑熊、豹、熊猴、现代人、水鹿以及猪的下颌第2臼齿齿啮合面及其外侧面的Moire等高线特征,... 哺乳类动物的臼齿形态与食性的关系十分密切,而对于齿型的判别一直依赖于直观的经验观察,缺乏实验资料。本文根据对刺猬、犬蝠、松鼠、裼家鼠、黑熊、豹、熊猴、现代人、水鹿以及猪的下颌第2臼齿齿啮合面及其外侧面的Moire等高线特征,提出了对哺乳类动物齿型进行初步对比和分类的建议。 展开更多
关键词 哺乳动物 臼齿 分类学 moire等高线
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计算机模拟Moire条纹现象
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作者 郑亚茹 杜木 刘成森 《辽宁师范大学学报(自然科学版)》 CAS 2010年第1期40-41,共2页
利用计算机图像技术产生周期性条纹方法模拟光栅叠加实现Moire条纹现象.考察Moire条纹的空间放大作用,研究一块光栅相对另一块平移时产生的Moire条纹移动过程,计算Moire条纹在平移过程中探测器的输出变化关系.
关键词 moire条纹 光栅 计算机模拟
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DETERMINING CRITICAL TIME OF ROCK DYNAMIC FRACTURE BY DYNAMIC MOIRE METHOD
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作者 喻勇 张宗贤 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 1995年第2期113+109-113,共6页
An effective Dynamic Moire method was presented to determine the critical time of crack instable propagation in rock dynamic fracture. Two pieces of grating were installed near the notch of Short Rod specimen to form ... An effective Dynamic Moire method was presented to determine the critical time of crack instable propagation in rock dynamic fracture. Two pieces of grating were installed near the notch of Short Rod specimen to form the Moire fringes, then the COD versus time could be monitored from the movement of the Moire fringes, and finally the critical time could be determined from the velocity of COD. This method was also compared with another one.It could be concluded that the critical time determined by Dynamic Moire method corresponds with that of the Transmitted Wave method at the loading rates from 103 to 104 MPa·m(1/2)·S(-1). 展开更多
关键词 ROCK moire method/dynamic fracture critical time
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基于Talbot效应和moire条纹的CCD精细拼接理论研究
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作者 王虎 苗兴华 《测试技术学报》 2004年第z6期45-48,共4页
在空间探测等领域,要想得到像元尺寸小、像元数多且价格便宜的CCD器件是比较困难的.目前解决的方法主要采用两片或多片CCD通过拼接来实现,故而在拼接时,错位量的准确移动直接影响着拼接后的整体效果.本文只用一块光栅和DⅡ-180°直... 在空间探测等领域,要想得到像元尺寸小、像元数多且价格便宜的CCD器件是比较困难的.目前解决的方法主要采用两片或多片CCD通过拼接来实现,故而在拼接时,错位量的准确移动直接影响着拼接后的整体效果.本文只用一块光栅和DⅡ-180°直角棱镜相结合并利用Talbot效应和moire条纹来进行CCD精细拼接.拼接精度可达到单个像元尺寸的1/20. 展开更多
关键词 CCD TALBOT效应 moire条纹 焦平面拼接
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Moire偏转技术(MD)检测相位物体的研究
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作者 王海林 《激光技术》 CAS CSCD 1989年第3期1-6,共6页
本文给出了Moire偏转技术检测相位物体的基本原理,分析了该技术的灵敏度,提出了一种消除测量光路系统误差的有效方法,并给出了实验结果。
关键词 moire 偏转技术 检测 相位物体
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EXPERIMENTAL STUDIES ON J-DOMINANCE IN HETEROGENEOUS WELDED JOINTS BY MOIRE INTERFEROMETRY
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作者 康继东 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1997年第2期186-189,共4页
Moire interferometry method is introduced to study the feasibilities of J integral as a plastic singularity parameter at the tip of the notch in the welded joints. The results show that J dominance in most studied cas... Moire interferometry method is introduced to study the feasibilities of J integral as a plastic singularity parameter at the tip of the notch in the welded joints. The results show that J dominance in most studied cases is not validated in v and u displacement fields. Therefore, it can be concluded that J-integral as controlling parameter used to estimate the safety of welded structures is not always valid. 展开更多
关键词 path integrals welded joints moire interfe-rometry J-dominance heterogencity
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APPLICATION OF 2-D MOIRE INTERFEROMETRYOF STICKING FILM IN HUMAN TIBIA MEASUREMENT
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作者 张桂琴 羡若凯 《Transactions of Tianjin University》 EI CAS 1999年第1期68-71,共4页
This paper makes use of the method of testing and measuring the human body tibia by using2-D moire interferometry of sticking film. hased on the J'--y direction moire patterns recorded synchronously by 2-D optical... This paper makes use of the method of testing and measuring the human body tibia by using2-D moire interferometry of sticking film. hased on the J'--y direction moire patterns recorded synchronously by 2-D optical path,the elastic constant,strain and displacement of the tibia are measured.Compared with the electric measuring method the error is samll and the sensitivity is high. 展开更多
关键词 2-D moire interferometry of sticking film elastic constant strain and displacement
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网点图像叠合时的Moire条纹
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作者 崔元日 吴新民 李向亭 《中国印刷》 1995年第1期35-42,共8页
借助于Fourier光学,分析了网点图像重叠而产生的Moire条纹形成原理和分布规律,指出了为避免Moire条纹的严重干扰,应设法使Moire条纹的间距取最小值,选择最佳网线角度。
关键词 印刷 网点彩色印刷 网点图像 叠合 moire条纹
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2D PHASE SHIFTING AND LOGICAL MOIRE USED IN FRINGES ANALYSIS
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作者 A.Asundi 《Acta Mechanica Solida Sinica》 SCIE EI 1994年第1期46-53,共8页
Phase Shifting And Logical Moire (PSALM) is a kind of computer image processing method which can be used in phase measurement and to obtain the shape, deformation and strain distribution of an object.This paper presen... Phase Shifting And Logical Moire (PSALM) is a kind of computer image processing method which can be used in phase measurement and to obtain the shape, deformation and strain distribution of an object.This paper presents the structure and working procedure of a 2D phase measurement PSALM2D program and its application. When analyzing moire interferometric fringes,we can obtain 2D distribution of displacement and strain.When it is used in reflection moire we can measure the slope of a specimen.Satisfactory visualization and quantitative results are given by PSALM2D. 展开更多
关键词 logical moire phase shifting image processing moire interferometry
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Estimation of Moire Patterns Using Spectral Trajectories in the Complex Plane
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作者 Vladimir SaveUev Sung-Kyu Kim 《Computer Technology and Application》 2012年第5期353-360,共8页
The authors found equations for complex coordinates of spectral peaks and trajectories in the case of two superposed layers, each consisting of two orthogonal gratings. The number of geometric elements in spectra was ... The authors found equations for complex coordinates of spectral peaks and trajectories in the case of two superposed layers, each consisting of two orthogonal gratings. The number of geometric elements in spectra was found for four running parameters and different number of gratings by layers. The shape of trajectories was determined in the corresponding cases. The relationships between parameters were found which could help in reducing the intervals of parameters, in particular the relationship between the inverse aspect ratios. The numerical simulation and the physical experiment were in a good agreement with the theory. The proposed technique seems to be helpful in estimation of occurrence of moir6 patterns in visual displays which makes possible the minimization in the spectral domain without calculation of spectra. 展开更多
关键词 moire effect moire minimization visual display spectral trajectory.
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获得高质量Moire条纹信号的一种新方法 被引量:1
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作者 吴新民 马轩文 《光学技术》 CAS CSCD 1996年第1期10-13,共4页
在细栅距的幅光栅系统中,衍射效应是很明显的,其能量约占总能量的10~40%左右,这种衍射光是造成Moire光电信号对比度不好和正弦性差的根本原因。本文分析了衍射光栅副±1级Moire条纹的位相关系与光栅副间隙等因... 在细栅距的幅光栅系统中,衍射效应是很明显的,其能量约占总能量的10~40%左右,这种衍射光是造成Moire光电信号对比度不好和正弦性差的根本原因。本文分析了衍射光栅副±1级Moire条纹的位相关系与光栅副间隙等因素的关系,提出了利用±1级Moire条纹来获得高质量Moire条纹信号,实际应用,效果良好。 展开更多
关键词 moire条纹 光栅副 位相
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Hole-drilling method using grating rosette and Moire interferometry 被引量:5
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作者 Jubing Chen Yongsheng Peng Shexu Zhao 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2009年第3期389-394,共6页
The hole-drilling method is one of the most wellknown methods for measuring residual stresses. To identify unknown plane stresses in a specimen, a circular hole is first drilled in the infinite plate under plane stres... The hole-drilling method is one of the most wellknown methods for measuring residual stresses. To identify unknown plane stresses in a specimen, a circular hole is first drilled in the infinite plate under plane stress, then the strains resulting from the hole drilling is measured. The strains may be acquired from interpreting the Moire signature around the hole. In crossed grating Moire interferometry, the horizontal and vertical displacement fields (u and v) can be obtained to determinate two strain fields and one shearing strain field. In this paper, by means of Moire interferometry and three directions grating (grating rosette) developed by the authors, three displacement fields (u, v and s) are obtained to acquire three strain fields. As a practical application, the hole-drilling method is adopted to measure the relief strains for aluminum and fiber reinforced composite. It is a step by step method; in each step a single laminate or equivalent depth is drilled to find some relationships between the drilling depth and the residual strains relieved in the fiber reinforced composite materials. 展开更多
关键词 Grating rosette Hole-drilling moire interferometry Residual strain
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Moire技术在防伪中的应用
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作者 王通 于长滨 谢文广 《林业科技情报》 2005年第3期57-58,共2页
本文提出了“Moire条纹显型密码”及“编码Moire条纹隐型密码”的概念及其在防伪技术中的实施方案。该方案可作为独立的防伪技术,亦可与激光、荧光、热敏等防伪技术相结合,以提高综合防伪技术能力及防伪产品的可视性和艺术感。
关键词 激光全息标识 显型密码 隐型密码 moire条纹 防伪技术 应用 防伪产品 技术能力 艺术感 可视性
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STUDY OF FAILURE MODES OF MICROELECTRONIC PACKAGING MODULES BY HOLOGRAPHY QUASI PROJECTION MOIRE METHOD 被引量:1
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作者 史训清 刘宝琛 戴福隆 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 1997年第2期179-185,共7页
In this paper, a novel interferometric method with a wide range of sensitivities, called holography quasi projection moire, is proposed. It combines the features of the variated double projection moire method and the ... In this paper, a novel interferometric method with a wide range of sensitivities, called holography quasi projection moire, is proposed. It combines the features of the variated double projection moire method and the holographic interferometry method. This technique is used to study the failure modes of microelectronic packaging modules. 展开更多
关键词 HOLOGRAPHY quasi projection moire sensitivity failure modes packaging modules
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Carrier fringe method of moire interferometry for tiny strain measurements in micro-field 被引量:2
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作者 Yudong Cao Shibin Wang +1 位作者 Shuangxi Qi Jingwei Tong 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2009年第1期101-106,共6页
In this paper, we demonstrate a new optical method for tiny strain measurements based on the principle of carrier fringes of moire interferometry. A cross-line grating with frequency of 1200 lp/mm is replicated on the... In this paper, we demonstrate a new optical method for tiny strain measurements based on the principle of carrier fringes of moire interferometry. A cross-line grating with frequency of 1200 lp/mm is replicated on the specimen surface, and the strain can be deduced from the changes in carrier fringes before and after the deformation of an object. Four coherent laser beams are used to obtain the carrier fringe patterns of field U and V. Both theoretical analysis and numerical simulation indicate that the ideal accuracy of strain can be controlled within a range of ±1με. Case study of a plane extension experiment shows that the measurement accuracy of strain can be controlled within the range of ±10με. The average strain values of every row of field U and every column of field V can be obtained by using this method, and approximated strain of every pixel in the whole-field can be further acquired, and thus it is possible to measure tiny strains occurred in a micro-field. The technology in this paper can provide comprehensive information for analyzing related mechanical content in the field of MEMS. 展开更多
关键词 moire interferometry - Carrier fringe Micro-field Tiny strain. Measured accuracy
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HIGH TEMPERATURE MOIRE INTERFEROMETRY TECHNOLOGY 被引量:1
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作者 Zhang Guozhou Zhuang Yunan B. S. J. Kang, Wang Fengxiang(Faculty 403, Beijing University of Aeronautics andAstronautics, Beijing, China, 100083) 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1996年第4期289-295,共7页
In order to investigate the survivable specimen gratings, the crossed-line300 lines/mm gratings were chemically etched directly into the surface of the specimens.In order to obtain high diffraction efficiency and to m... In order to investigate the survivable specimen gratings, the crossed-line300 lines/mm gratings were chemically etched directly into the surface of the specimens.In order to obtain high diffraction efficiency and to minimize the shear lag, the etcheddepth of the gratings was one fourth the wave length of coherent light. The influence ofthe uneven window on the high temperature moire interferometry was preliminarily analyzed. The quartz and inconel 718 specimens were tested up to 1200℃ and 900℃. Thecrack tip deformation singular field as well as load-induced and thermal expansion displacement fields were measured by means of high temperature moire interferometry. 展开更多
关键词 high temperature moire interferometry DIFFRACTION gratings (spectra)
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