Mrozek Piotr, Mrozek Ewa, Lukaszewicz Tadeusz
Department of Physics, Technical University of Bialystok, Wiejska 45 A, 15-351 Bialystok, Poland.
Appl Opt. 2006 Feb 1;45(4):756-63. doi: 10.1364/ao.45.000756.
The results of experimental determination of multimode strip waveguide refractive index profiles and Ag concentration profiles obtained by using the variable wavefront shear double-refracting interferometry microinterferometer Biolar PI and an electron microprobe are presented. The strip waveguides under investigation are formed in soda lime glass in an external electric-field-assisted Ag+ -Na+ ion-exchange process from the molten AgNO3 salt by use of dielectric masks with channel apertures. A dry electrochemical technique of dielectric mask formation is applied. The influence of waveguide-forming parameters on the shape of Ag concentration profiles and the range of silver diffusion are shown. Changes in the usually assumed boundary conditions of electric-field calculations in ion-exchange numerical modeling are suggested.
介绍了使用可变波前剪切双折射干涉仪Biolar PI和电子微探针获得的多模条形波导折射率分布和银浓度分布的实验测定结果。所研究的条形波导是在钠钙玻璃中通过外部电场辅助的Ag⁺-Na⁺离子交换过程，利用具有通道孔的介电掩模，由熔融的AgNO₃盐形成的。采用了介电掩模形成的干式电化学技术。展示了波导形成参数对银浓度分布形状和银扩散范围的影响。提出了离子交换数值模拟中电场计算通常假设的边界条件的变化。
