The basic idea of the finite element beam propagation method (FE-BPM) is described.
文中概述了有限元束传播方法的基本思想和方法。
A wide Angle beam propagation method (WBPM) applicable to integrated optics is presented.
阐明了一种简单的宽角光束传播法在集成光学中的应用。
The Microstructure Optical Fiber Bragg Grating(MOFFBG) is simulated using beam propagation method(BPM).
利用光束传播法对微结构光纤布拉格光栅谐振特性进行了模拟研究。
The finite difference beam propagation method(FD-BPM) can simulate the performance of the waveguide accurately.
有限差分束传播法则能够准确地模拟波导的性能。
The finite difference beam propagation method(FD-BPM)is used to design a device of 66% MMI-converter-Combiners.
采用有限差分波束传输法（FD-BPM）设计了一种66%模式转换、合并器。
Only positive Helmholtz equation is considered in beam propagation method, while the negative component is approximately zero.
在光束传输法中只分析前向亥姆霍兹方程，而后向分量近似为零。
Based on beam propagation method, analysis and simulation on optical propagation characteristics of side-polished fiber have been made.
基于有限差分光束传播法，对侧边抛磨光纤的光传输特性进行了模拟计算。
Variational-Effective index method and Finite difference beam propagation method(FD-BPM) are both practicable waveguide simulation tools.
在众多的波导模拟工具中变分有效折射率法和有限差分束传播法都是实用性非常强的。
Then numerical algorithms are used to analyze integrated optical wave-guide and beam propagation method is a good method which is widely used.
于是出现了用数值分析方法来分析集成光波导，其中，光束传播法就是分析光波导器件的一种好方法。
The propagation characteristics of several kinds of laterally tapered transitional waveguides are analyzed using the beam propagation method(BPM).
基于光束传播法，对几种只沿纵向变化的锥形过渡波导的传输特性进行了分析。
The three-dimensional finite-difference beam propagation method was used to compute the optical properties of fiber devices based on side-polished fiber.
本文还用三维有限差分光束传输法计算了侧边抛磨光纤波导的光学特性。
Calculating on practical problems shows that both the finite-difference beam propagation method and the gain character programs can give reasonable results.
实际计算表明，本文所编写的有限差分束传播法和掺铒波导增益特性计算程序，均能给出合理的计算结果。
A wide Angle beam propagation method in an oblique coordinate system (OCS wa BPM) based on coordinate transformation is used to simulate optical waveguides.
用坐标变换的倾斜坐标系中的广角光束传播法对光波导进行了分析。
The wave propagation characteristics of the splitter are numerically simulated by the finite difference beam propagation method and experimentally investigated.
首先用有限差分光束传播法模拟了器件的光波传播特性，然后进行了初步的实验验证。
The paper first studies beam propagation method which is used in numerical analysis of one-way process of an optical waveguide with continuous longitudinal refractive index.
本文首先研究了光束传输法数值分析纵向折射率连续变化光波导的单向光波传输过程。
The alternate-direction implicit finite difference beam propagation method (FD-BPM) is used to analyze the two-dimensional (2D) symmetrical multimode interference (MMI) couplers.
交替方向隐式有限差分波束传输法被用来分析二维限制对称多模波导干涉耦合器。
The analytical intensity distributions in the two specific cases are given, and the three-dimensional full-vector beam propagation method is used to verify the analytical results.
利用该耦合方程对空间三波导和四波导进行求解，得出场分布的解析表达式，并用三维全矢量光束传输法验证了分析结果。
It studied simple transparent boundary condition (STBC) and complete transparent boundary condition (CTBC) used in beam propagation method (BPM) and their effects on calculation accuracy.
研究了束传播算法(BPM)中简单透明边界条件(STBC)和完全透明边界条件(CTBC)两种边界处理算法对计算结果精度的影响。
The modal cutoff properties and exciting conditions of higher order resonant modes for Ge-doped photonic crystal fiber Bragg grating(PCFBG) are investigated using beam propagation method(BPM).
采用光束传播法研究了实心掺锗光子晶体光纤布拉格光栅（PCFBG）的模式截止特性。
The dispersive and nonlinear properties of the microstructure fiber with hexagonally distributed air-holes in the cladding are numerically simulated by using the vectorial beam propagation method.
采用矢量光束传输法对空气孔包层呈正六边形分布的微结构光纤的色散和非线性特性进行了数值模拟。
The paper studies non-iterative bidirectional beam propagation method based on scattering operators which is used in numerical analysis of optical waveguide with abrupt longitudinal refractive index.
本文主要研究了基于散射算子的非迭代双向光束传输法数值分析纵向折射率有突变光波导的稳定性和精度等问题。
So the main work in this dissertation is compiling and debugging the program for solving the field distribution in channel waveguides using three-dimensional finite-difference beam propagation method.
为此，本文重点完成了利用三维有限差分束传播法求解条形波导中场分布的计算程序的编写和调试。
Propagation stability of non-paraxial beam in nonlinear Kerr media is investigated by using the linear stability method.
利用线性稳定法研究非傍轴光束在非线性克尔介质中的传播稳定性。
By use of the angular-spectrum analysis and the Fourier transform method, a correction method is obtained to describe the propagation of few-cycle pulsed beam with constant beam waist.
利用角谱分析和傅里叶变换的方法，得到一种描述几个周期的等束腰宽度脉冲光束传输的脉冲修正方法。
In chapter 5, the propagation properties of partially coherent flat-topped beam are analyzed by tensor method.
第五章主要利用张量方法分析了部分相干平顶光束的一些传输特性。
By use of this method, we can not only obtain the propagation matrix of atom beam in free space under the influence of gravity, but also obtain the interaction matrix of atom beam with and pulse.
利用这种方法不但能得到原子束在重力的影响下在自由空间中的传输矩阵，也可以得到原子束与脉冲的相互作用矩阵。
Gaussian beam propagation through complicated optical systems is studied in detail by using matrix optics method.
使用矩阵光学技巧和方法详细研究了高斯光束通过复杂光学系统的传插问题。
The traditional method of numerical simulations for laser beam propagation in the turbulent atmosphere is modified.
对传统的激光大气传输湍流效应的数值计算方法进行了改进。
Thus, the boundary reflection effect and other effects must be considered during using the propagation-attenuation method to measure damping of a beam.
利用传播衰减法测量梁结构阻尼应考虑边界反射等影响。
Tensor method; Partially coherent beam; Partially polarized beam; Spectral properties; Propagation properties; Turbulent atmosphere.
张量方法；部分相干光；部分偏振光；光谱变化；传输特性；大气湍流。
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