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介质光栅     
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  dielectric grating
     Analysis on near-field and diffraction problem of 1-D dielectric grating using FDTD method
     1维介质光栅近场及其衍射的FDTD分析
短句来源
     Research on Guide-Mode Resonance for Sub-Wavelength Dielectric Grating
     亚波长介质光栅导模共振研究
短句来源
     The investigation of broad-band characteristics of dielectric grating coupler
     介质光栅耦合器宽带工作特性研究
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     Weak modulated dielectric grating can be equivalent to planar waveguide. When it diffracted high-order spatial sub-wave is coupled with waveguide mode, a guided mode resonance is formed.
     弱调制介质光栅可等效为平板波导,经其衍射的高级次子波与波导模式耦合时,形成导模 共振。
短句来源
     An analytical expression for the resonant position of weak modulated dielectric grating at normal incidence is derived from the optical path of high-order sub-wave in dielectric grating and Fresnel phase-shifting. Its predicted results are consistent with strict coupling wave theory.
     由高级子波在介质光栅中的光程及菲涅耳相移,导出了垂直入射时弱调制介质光栅共振位置的解析表达式,其预测结果和严格耦合波理论所得值一致。
短句来源
  dielectric gratings
     8mm leaky-wave antennas of the periodic dielectric structures based on the dielectric gratings theory are studied and fabricated.
     8mm周期介质结构的漏波天线是根据介质光栅理论研制的。
短句来源
     Analysis of Fabrication Error of Subwavelength Dielectric Gratings
     亚波长介质光栅的制作误差分析
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     Analysis of Plane Wave Diffraction by Dielectric Gratings with MEI
     MEI方法分析介质光栅对平面波的绕射
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     The rigorous coupled-wave analysis of guided-mode resonance in dielectric gratings
     介质光栅导模共振耦合波分析
短句来源
     Analysis of Rigorous Modal Theory for Arbitrary Dielectric Gratings Made with Anisotropic Materials
     任意各向异性介质光栅的严格模式理论分析
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  optical grating
     Finite element method of solving diffraction problem of dielectric optical grating
     有限元法结合周期边界条件分析介质光栅衍射
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  medium gratings
     Algorithm of modal theory of anisotropic medium gratings
     各向异性介质光栅的模式理论算法
短句来源
     In this paper,Fourier extended method of inverse rule and recurrent algorithm of the reflection transmission coefficient matrix(RTCM) are extended in electromagnetic anisotropic medium gratings.
     本文把“逆规则”傅立叶展开法和反射透射系数阵 (PTCM )递推算法推广到电磁各向异性介质光栅中。
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      dielectric grating
    Improved perturbation analysis of millimeter-wave dielectric grating leaky wave antenna
          
    An improved perturbation procedure is used for analyzing the radiation characteristics of the millimeter wave dielectric grating leaky wave antenna.
          
    The electromagnetic fields are described in terms of a transverse transmission-line network, which brings considerable physical insight into the overall behavior of the dielectric grating.
          
    Various planar dielectric grating diffraction theories are reviewed for the case of a general sinusoidal permittivity planar grating with slanted fringes and plane wave incidence at an arbitrary angle.
          
    Improved perturbation analysis of dielectric grating antenna
          
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      dielectric gratings
    Propagation of eigenmodes in cylindrical dielectric gratings simulated using the impedance boundary conditions
          
    Eigenmodes propagating in cylindrical dielectric gratings (CDGs) are studied.
          
    The Stratified Dielectric Gratings used as 3-D EBG Structure
          
    In this paper, the band-gap characteristics of 3-D EBG structure composed of stratified orthogonal or non-orthogonal dielectric gratings are analyzed.
          
    The stratified dielectric gratings used as 3-D EBG structure
          
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      optical grating
    Using movable shadow masks, the accelerated cluster beam may erode staircase structures acting as an optical grating.
          
    The optical grating configuration was simulated in terms of a spatial filter.
          
    Gaussian beam diffraction by a quasi-optical grating for coupling to lower-hybrid plasma waves
          
    Immunocomplexation at waveguiding TiO2/SiO2 surfaces was monitored with an integrated optical grating coupler, and the kinetic parameters of antigen binding to surface-immobilized F(ab')2 fragments of a monoclonal antibody were determined.
          
    The system integrates a standard multiphoton fluorescence microscope, an optical grating spectrograph operating in the UV-Vis wavelength region, and a 16-anode photomultiplier tube (PMT).
          
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    This paper discusses the principle and design of 8mm dielectric integrated antenna with experimental results given. 8mm leaky-wave antennas of the periodic dielectric structures based on the dielectric gratings theory are studied and fabricated. The antenna built on an inverted-strip dielectric waveguide has a planar handy construction, which can easily be mounted on the outer hull of an aircaft or used in light systems. The antenna can be employed as millimeter wave high-gain directional antenna or as frequency-scannable...

    This paper discusses the principle and design of 8mm dielectric integrated antenna with experimental results given. 8mm leaky-wave antennas of the periodic dielectric structures based on the dielectric gratings theory are studied and fabricated. The antenna built on an inverted-strip dielectric waveguide has a planar handy construction, which can easily be mounted on the outer hull of an aircaft or used in light systems. The antenna can be employed as millimeter wave high-gain directional antenna or as frequency-scannable antenna. The half-power beamwidth in the E-plane, gain and side-lobe level were measured to be 5°, 24db and 20db, respectively, when metal flares were attached along both sides of the antenna with optimum angle, the Gain is raised to 27db. The dielectric integrated antenna with circular beam of about 5° is also fabricated. The experimental results agree reasonably well with theoretical predictions

    本文讨论了8mm介质集成天线的原理和设计,并给出了实验结果。 8mm周期介质结构的漏波天线是根据介质光栅理论研制的。它以倒置介质带状波导为基体,平面结构轻巧,适合装在飞行器的外表面及轻便系统中使用。它可用作毫米波高增益的定向天线亦可用作宽频带的波束扫描天线。研制成的天线E面已经达列5°的窄波束,24db的增益和20db的旁瓣电平。附加一对尺寸不大的金属反射板后已可得到27db的增益。5°左右的圆锥波束介质集成天线也已制成。对研制天线的实测结果与理论计算基本一致。

    A generalization of the second-order coupled-wave theory of diffractions on planar dielectric gratings are presented. The theoretical analysis is rigorously based on the static Maxwell's equations. Therefore, it is easy, in principle, to obtain accurate results by following the computational method given by the present paper.

    本文在Moharam等人工作的基础上,对现有的平条纹面介质光栅衍射的二阶耦合波理论作了进一步推广。文中理论分析严格地建立在定态麦克斯韦方程组的基础之上。因此,原则上,按照本文所介绍的方法可以借助计算机得到具有任意所需精度的结果。 本文所研究的对象是平条纹面介质光栅。文中除要求光栅介质具有平面等值面及平面表面外,对光栅结构没有其它限制。本文允许照明光波以任意方向入射(特别是,允许入射面与光栅矢量面成任意夹角)。此外,本文还允许入射光具有任意的偏振状态,并以一系列琼斯矩阵表示光栅的衍射特性。这意味着本文把光栅也当作一种偏振元件来处理。

    This paper discusses the principle and design of novel millimeter wave DBR(Distriputed Bragg Reflector)Gunn oscillators with experimental results. The oscillator is based on the dielectric grating theory and coupled mode theory for guided wave optics.The operating principles are quite similar to the DBR lasers developed in integrated optical circuits of recent years.The device is built on an inverted-strip dielectric waveguide.The surface wave stopband phenomena is exhibited due to the coupledmode for providing...

    This paper discusses the principle and design of novel millimeter wave DBR(Distriputed Bragg Reflector)Gunn oscillators with experimental results. The oscillator is based on the dielectric grating theory and coupled mode theory for guided wave optics.The operating principles are quite similar to the DBR lasers developed in integrated optical circuits of recent years.The device is built on an inverted-strip dielectric waveguide.The surface wave stopband phenomena is exhibited due to the coupledmode for providing frequ- ency and mode-selective reflections which produce positive feedback to the diode.It is possible to obtain millimeter wave oscillations with the spectral purity and stability. The oscillator fabricated from the previous principles has an output of 60~90mw and frequency stability 10~(-5) at 36GHz.The experimental results agree reasonably well with the theoretical predictions.

    本文讨论了新型毫米波 DBR(Distributed Bragg Reflector)Gunn 振荡器的原理和设计,并给出了实验结果。应用介质光栅理论和耦合模理论,及类似于集成光学、DBR 激光器的工作原理,以倒置介质带状波导为基体,利用模式耦合所呈现的表面波阻带现象提供频率和模式的选择性反射,对 Gunn 二极管产生正反馈,从而得到频谱很纯、很稳定的毫米波振荡。这种振荡器在36GHz,达到60~90mW的输出,频率稳定度可达10~(-5)。实测结果与理论计算基本一致。

     
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