平面波展开的英文

• plane wave expansion

• "平面波"英文翻译    plane wave
• "展开"英文翻译    develop; spread; spread out; ...
• "波展开" 英文翻译 :    wave spread
• "分波展开" 英文翻译 :    partial wave expansion
• "洪水波展开" 英文翻译 :    attenuation of flood wave
• "谐波展开" 英文翻译 :    harmonic development; harmonic expansion
• "平面波" 英文翻译 :    plane wave
• "大气平面波" 英文翻译 :    plane atmospheric wave
• "反射平面波" 英文翻译 :    reflected plane wave
• "简谐平面波" 英文翻译 :    monochromatic plane wave
• "进行平面波" 英文翻译 :    traveling plane wave
• "均一平面波" 英文翻译 :    uniform plane wave
• "均匀平面波" 英文翻译 :    uniform plane wave
• "离轴平面波" 英文翻译 :    off-axis plane wave
• "平面波场" 英文翻译 :    plane-wave field
• "平面波导型" 英文翻译 :    planar waveguide-type
• "平面波分解" 英文翻译 :    plane wave decomposition; plane wave resolution; pwd
• "平面波解" 英文翻译 :    plane wave solution
• "平面波模拟" 英文翻译 :    plane-wave simulation
• "平面波前" 英文翻译 :    plane wave front
• "平面波束" 英文翻译 :    beavertail
• "平面波系" 英文翻译 :    planar wave system
• "平面波响应" 英文翻译 :    plane wave response
• "平面波信号" 英文翻译 :    plane wave signal
• "平面柱面波" 英文翻译 :    plane cylindric wave

• Two - dimensional acrylic / air sonic band structure with square lattice is considered in the numerical example
  本文以平面波展开法分析压克力?空气声子晶体声波全频沟之现象。
• The plane expansion method is widely used in the analysis for the band structures of photonic crystals
  平面波展开方法在计算光子晶体能带方面应用广泛，但是用于分析光在光子晶体中的行为却不方便。
• But it is very inconvenient for the analysis of light ' s behavior in it . in this thesis , a new method based on plane expansion method is proposed
  本文在深入分析平面波展开方法的基础上，对这种方法进行了修正，使得它适合于分析光子晶体中光的传播性质。
• Using the plane wave expansion method , from the computation result for the band gaps structure of infinitd periodic one dimension phononic crystal , it is found the width of the first gap relates with the material portion ratio
  利用平面波展开法，计算一维无限周期结构声子晶体的带隙结构，发现每一带隙的宽度与材料的组份比有关。
• In the present thesis , we have considered a 2d photonic crystal of square lattice formed by two materials of dielectric constants . we consider the structure to be formed by a large number of small rectangle or square pixels of uniform size
  本文提出不管哪种结构均可看成是由很多个同样大小的小矩形或正方介质像素组成的，对这种二维像素型光子晶体结构，对传统平面波展开法可经修正使之收敛速度大大提高。
• With the plane wave representation of the green ' s function , the second - order scattered coefficients are divided into two components related to the coincidental waves and the anti - coincidental waves , which are dependent on the relationship between the single scattered field and its conjugate
  通过将格林函数做平面波展开的方法，二阶散射系数分解成与同向波和反向波有关的两部分，同向和反向分别是按单次散射场和其共轭场的耦合方式而划分的两种不同情况。
• Then the theoretical computing methods are presented , in which we emphasize particularly on the plane wave method ( pwm ) and the finite element method ( fem ) . with the two methods mentioned above , important parameters such as bandgap , dispersion , leaky loss and so on are calculated , as well as the birefringence of two kinds of mf , which are in two different mechanisms . a new type of optical coupler based on dual - core bandgap microstructure fiber is presented
  主要研究内容如下: 1 、利用平面波展开方法和有限单元方法研究了微结构光纤的传导特性,对三角形、蜂窝形栅格空气孔包层结构的光子能带进行了研究,在此基础上阐述了光子晶体光纤的传导机制,对折射率引导和光子带隙引导微结构光纤的波导色散、泄漏损耗和有效模场面积进行了研究。
• The details are described as follows : 1 . the photonic bandgap theory based on total internal reflection ( tir ) pcfs filled with by high index material ( nlc ) is proposed for the first time . based on this theory , the effects of nlc - filled tir - pcfs on the transmission mechanism and propagation properties are studied using plane - wave method and full - vector fem
  主要研究内容和成果包括以下基本方面: 1 、首次提出基于填充高折射率介质(液晶)的折射率引导型pcf的光子带隙理论分析方法,在此理论的指导下,采用平面波展开法和有限单元法研究了填充对光纤传导机制和传输特性的影响,研究结果表明液晶填充可以实现光子晶体光纤导光机制的转变。
• A plane - wave expansion method based on the effective medium theory is firstly introduced , and the new method has a better convergence than that of the pwm . as a new method for calculating the band structure of a photonic crystal , a finite difference scheme is also introduced to the governing differential equation based on the effective medium theory
  首先提出了基于等效介质理论的平面波方法，显著地改善了平面波算法的收敛性质；同时提出一种新的计算光子晶体能带的有限本征差分算法，与已有的平面波展开法相比，新方法保留了本征值算法的独特优点，同时又克服了平面波展开法的慢收敛性。
• Based on the requirement and target of the projects , firstly , pcf bragg grating are investigated theoretically and experimentally . moreover , the effects of filling high refractive index material ( nematic liquid crystal , nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ) , farther , several novel pcfs are proposed and designed . lastly , we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser , which integrate all performances of broad - band tunable wavelength , uniform output power spectrum , high repeat frequency and high average power to together
  本论文选题于国家973 、 863以及国家自然科学基金等项目,结合课题的要求和主要目标,在对光子晶体光纤( pcfs )传输特性研究的基础上,首先对光子晶体光纤光栅进行了理论和实验研究;然后,采用平面波展开法和有限单元法分析了在光纤的空气孔中填充高折射率液晶对光纤传导机制和传输特性的影响,提出并设计了几种新型光子晶体光纤;最后,提出并研制成功连续可调谐、输出功率谱均衡的全光纤化、高功率包层泵浦铒镱共掺光纤激光器实验样机。