渐变折射率分布

针对Ag+-Na+离子交换形成的渐变折射率分布，分析了多模干涉（MMI）型功分器的工作原理。

Based on the graded-index profile of waveguides fabricated by Ag ~ + - Na ~ + ion exchange , the principle of multimode interference ( MMI ) optical splitter is studied .

求解渐变折射率分布平面光波导模式的数值方法

Numerical approaches for modes in planar optical waveguides with graded-index profile

最后，给出了一个普遍的特征方程，它适用于具有任何量化渐变折射率分布的光纤。

Finally , a general characteristic equation applicable to optical fibers of any kind of quantized refractive index distribu - tion is given .

通过对渐变型折射率分布的多模波导中自映像效应的理论研究，设计并利用离子交换法制作了玻璃基MMI型N×N光耦合器和1×N光功分器。

After making analysis and simulation of SIE in graded-index waveguides , we design the MMI NxN optical coupler and 1 × N optical splitter on the glass substrate . Then we fabricate the devices using ion-exchange process .

改进了用于确定渐变平面波导折射率分布的反WKB方法，这种渐变折射率分布是从在WKB近似的条件下得到的本征方程用数值方法求得的。

The improvement of inverse Wentzel-Kramer-Brillouin ( WKB ) method for refractive-index profile of a graded-index planar waveguide calculated numerically from the eigenvalue equation under the WKB approximation is extended .

文中给出了求渐变折射率平板波导场分布的差分方程法，利用它可以很方便地得到TE模和TM模的场分布。

In this paper , difference equation method is presented to obtain the field distribution in planar optical waveguide with graded-index profile . By using this method , we can easily obtain the field distribution of TE mode and TM mode .

由于IWKB方法有明确的物理意义，简单的计算过程，已广泛的应用于拟合离子交换等渐变折射率波导折射率分布当中。

, of which inverse WKB method has been widely used for its clear physical meaning and simple calculation process .