propagation constant meaning in English
传播常量
传播常数
扩散常数
Examples
- The radiation loss was obtained from the imaginary part of the complex propagation constant and the transition loss was calculated by two - dimension overlap integral method
基于计算得到的直弯波导的模场分布，采用二维重叠积分法计算了两者连接时的过渡损耗。 - This antenna is a transmission line structure with propagation constant increasing from negative to positive values , providing the backward to forward scanning capability as frequency is increasing
这种天线基于传输线结构，其传播常数由负值增加到正值，显现出一种随频率增加而具有的由后向辐射变为前向辐射的特性。 - Based on the semi - vector wave equation under cylindrical coordinate system , the mode distribution and complex propagation constant in bent waveguides were computed by a finite difference method with perfectly matched layer ( pml ) boundary condition
摘要以柱坐标下的半矢量波动方程为基础，采用基于完美匹配层( pml )边界条件的有限差分方法，对弯曲波导进行模式求解，进而得到波导弯曲引起的辐射损耗。 - As beams transmit mostly in the core of waveguide , also the changes of thickness and refractive index of the sample will quickly and sensitively affect the propagation constant , the information of sample can be obtained through monitoring the propagation constant . 4 . the periodic anti - resonant reflecting layers are presented
由于光束集中在作为波导层的待测物之中传输,而由待测物质的厚度、折射率等参数带来的微小变化均会引起导模传播常数的变化,通过监测传播常数的变化即可得到待测物质的信息。 - The physical meaning for each of the term in the coupling coefficient is stated . in particular , we advance firstly ( as far as our knowledge ) , that the birefringence can cause additional coupling for the directional coupler . then , taking the ti - diffused linbo3 directional coupler and the ti - diffused linbo3 with gradient refractive index for examples , we make the numerical simulation for the coupling coefficient or the propagation constant , which prove that the birefringence has played a crucial effect on the propagation constant and the coupling between the modes that we can not neglect
第二，我们推导出了弱导近似下各向异性光波导在任意微扰下的非正交耦合模理论，得到了物理意义鲜明的耦合波方程和耦合系数表达式，指明了耦合系数所包含的四项各自的物理意义及在不同条件下的取舍，首次提出在方向耦合器中双折射将引起附加的耦合，并以钛扩散铌酸锂方向耦合器和折射率渐变分布的钛扩散铌酸锂矩形波导为例对耦合系数进行了数值模拟，充分体现了双折射项对传播常数的影响。