The normalized propagation constant, which determines the number of the modes and mode cutoff is obtained for a PCF: with a certain structure parameters.
对于给定结构的PCF，计算得到了决定模式数量及模式截止的归一化传播常数。
The index of the core is a little smaller than that of the cladding base material, so the fundamental mode loss of short wavelength increases rapidly and leads to the mode cutoff.
这种光纤的纤芯折射率比包层基质折射率小，所以短波长时基模损耗迅速增大，使得光传输截止。
This paper describes the application of finite element method for obtaining the TE mode′s cutoff wavelength and the field pattern of symmetric quadruple-ridged rectangle waveguide.
应用有限元分析方法计算了对称四脊矩形波导TE模式的传输特性，即截止波长和场结构图传输特性。
For example, for a homogeneous optical fiber the computed relative error of normalized cutoff frequency for all guide-mode are between 10 ~ (-3) and 10 ~ (-5).
例如，对均匀光纤，计算出的所有导模的归一化截止频率值的相对误差为10 ~ (-3)10 ~ (- 5)。
In this article, the influences of the mode field diameter, the cutoff wavelength and the relative refractive index difference on the OTDR curve are also verified.
文中还验证了单模光纤的模场直径、截止波长、相对折射率差对OTDR曲线的影响。
It calculates the cutoff wavelength and single-mode bandwidth at the change of the ridge dimensions, gives the dominant mode field pattern and the corresponding curve of the deformation vs.
计算了脊的尺寸变化时的截止波长和单模带宽，给出了主模场结构图以及变形对截止波长和单模带宽影响的关系曲线，并分析了传输特性随对称脊波导结构尺寸变化的情况。
The paper reports the hybrid optical bistable device made of cutoff single mode- channel waveguide modulator in a X-cut Y-propagating LiNbO_8 substrate and nonlinear electric feedback.
本文报导了由质子交换工艺在铌酸锂衬底上制作的单模条波导截止调制器和非线性电反馈组成的混合光学双稳态器件。
The paper reports the hybrid optical bistable device made of cutoff single mode- channel waveguide modulator in a X-cut Y-propagating LiNbO_8 substrate and nonlinear electric feedback.
本文报导了由质子交换工艺在铌酸锂衬底上制作的单模条波导截止调制器和非线性电反馈组成的混合光学双稳态器件。
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