折射率分布

理论分析和实验结果比较表明，Fermi折射率分布函数能较好地描述准阶跃渐变折射率。

It is shown that the quasi-step-graded index profile can be approximated by Fermi index profile .

利用有限元法（FEM）对二维扩散过程以及相应的条波导的折射率分布进行了数值模拟。

The two dimensional diffusion process and the corresponding refractive index profile of the channel waveguide were numerically modeled using a finite element method ( FEM ) .

函数n（x，y）称为折射率分布。

The function n ( x , y ) is known as the refractive index profile .

运用反W、K、B法计算出质子交换光波导的折射率分布。

The rafractive index profiles of the proton exchange waveguides were obtained by the invers W. K. B. calculation .

层状GRIN板折射率分布的自动测量

Automatically measuring the refractive index distribution of a layer GRIN plate

Ti扩散LiNbO3平面波导的折射率分布测量

Measurement of refractive index profile of Ti-diffused LiNbO_3 plane waveguides

Fermi型折射率分布平面光波导的模式

Modes of a planar optical Waveguide with Fermi index profile

对Fermi折射率分布的特性进行了分析，用光线理论推导出Fermi折射率平面光波导的近似超越模方程。

The characteristics of Fermi index profile have been analysed .

它是基于变分法和有限差分法的结合，适用于任意折射率分布和r值。

This method is based on the combination of variation and finite difference methods , and is suitable for the arbitrary index profile and width-depth ratio .

轴位移法测定GRIN透镜的折射率分布系数

The Axial Deviation Method for Measuring the Refractive Index Distribution Coefficients of GRIN Lens

白光在LiNbO3∶Fe晶体中写入的任意折射率分布光波导

Fabrication of Waveguides with Arbitrary Index Profiles in LiNbO_3 ∶ Fe Crystal by White Light Irradiation

给出了耦台系数公式和不同v值及指数折射率分布参数g的耦合系数随距离D的变化曲线。

Coupling coefficient formula is derived and curves of the coupling coefficients as a function of distance D with different F values and exponent g of power law-index are plotted .

研究表明，采用Fermi函数可以很好地描述离子交换平面光波导折射率分布情况。

The researches show that the Fermi function can be used to describe the refractive-index profiles of the ion-exchanged planar waveguides .

LiNbO3：Fe晶体中白光写入的具有任意折射率分布的光波导

White-light-induced optical waveguides with arbitrary index profiles in LiNbO_3 : Fe crystals

提出了折射率分布呈双抛物线结构的光纤，研究了它的传输特性，并与W型光纤做了比较，证明它是一种性能优越于W型光纤的新型光纤结构。

A new fiber which index profile is double parabolic profile was proposed , its transmission characteristics was analyzed and it was compared with W-fiber and was regarded as a promising fiber .

GRIN聚合物微球是一类新型光学器件，主要依靠介质特殊的非均匀折射率分布以实现各种光学功能。

GRIN micro-sphere is a new-type optical element , its optical function is mainly achieved by the inhomogeneous reflective index distribution of the medium .

Ni~+注入BiB3O6晶体光波导的折射率分布

The Refractive Index Profile of the Optical Waveguide Formed by MeV Ni ~ + Ion Implantation into BiB_3O_6 Crystal

本文利用Maxwell波动理论，研究阶梯折射率分布的椭圆光波导特性.给出了解析解式和本征方程；

The purpose of this paper is to utilize the Maxwell wave theories to study gradient refractive index of elliptical waveguides . We provided accurate solution and characteristic equation .

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 .

本文利用等光程方法导出了薄透镜等效Woods透镜的折射率分布函数及两者结构参数之间的关系。

The refractive index destribution function of Woods iens equivalent to thin lens and the relations between the structure parameters of two lenses are obtained by using an equal-optical path method in the paper .

采用频域相移法测量了不同长度的两种折射率分布塑料光纤：阶跃型塑料光纤（SIPOF）和渐变型塑料光纤（GIPOF）的微分模延迟曲线。

Differential mode delay of step index-polymer optical fiber ( SI-POF ) and gradient index-polymer optical fiber ( GI-POF ) with various lengths is measured by the frequency-domain phase-shift technique .

该模型采用基于温度和掺杂剂浓度修正的Carreay黏度方程，利用计算流体动力学软件Fluent模拟求解出拉丝后光纤折射率分布。

Using the Carreau viscosity equation , modified according to temperature and dopant concentration , was adopted in the calculation with computer fluid dynamic software-Fluent to obtain the refractive index profile of GI POF .

用甲基丙烯酸甲酯（MMA）作为基质，采用界面凝胶聚合技术成功地制备了渐变型塑料光纤预制棒，并探讨了掺杂剂浓度及其分子体积以及聚合温度对折射率分布的影响。

Plastic rods with gradient refractive index were successfully fabricated by the interfacial-gel polymerization technique , in which two kinds of dopants were used for their higher refractive index and different molecular volume .

最后，通过复折射率分布作为纽带，将两个轴上的模型耦合起来，形成了能够反映SU-8曝光实质的新型光化学曝光模型。

Finally , the two models were coupled by complex refractive index , forming a new photochemistry exposure model which can reflect the essential process of SU-8 exposure .

根据波导的应力分布，得出波导的折射率分布，并使用ADI全矢量方法求解出波导的模式折射率。

With the stress distribution , the mode index is calculated by the finite difference solution for the full vector waveguide equation based upon the alternating direction implicit ( ADI ) iterative method .

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 .

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 .

以聚甲基丙烯酸甲酯为芯皮层原料、苯硫醚为掺杂剂制备了GIPOF，并通过聚焦法测得光纤折射率分布。

GI POF was prepared using polymethyl methacrylate ( PMMA ) as core and clad , diphenyl sulfide ( DPS ) as the dopant . The refractive index profile of GI POF was measured using focusing method .

本文研究了在Ti扩散LiNbO3衬底上用苯甲酸质子交换制备光波导的方法，以及单模条件、折射率分布、交换系数、表面状态和热稳定性等问题。

We report the method , condition for the single-mode waveguide , index profile , exchange coefficient , surface state and thermal stability of optical waveguides formed in Ti : LiNbO_3 substrate by proton exchange in benzoic acid .

用棱镜耦合技术测量了交换之后波导的暗模特性，用iWKB方法拟合了波导的折射率分布。

The dark mode spectra are measured by prism coupling method and the refractive index profiles are reconstructed by iWKB method .