电场辅助离子交换制备玻璃光波导

Fabrication of optical waveguides in glass with field-assisted ion exchange

使用电场辅助离子交换和热离子交换技术在玻璃基片上制作了平板波导。实验结果表明,这两种方法制作的波导的有效折射率分布不同,电场辅助离子交换技术制作的波导有效折射率呈近似阶跃型分布,而热离子交换制作的波导有效折射率分布为渐变型。经数值计算发现,近似阶跃型折射率分布的波导对光场限制得更好,更适用于制作有源光器件和集成光器件。

Planer optical waveguides in glass have been fabricated with field-assisted ion exchange and thermal ion exchange technology. The results show that the refractive profiles of the waveguids are different with the abve two methods. A waveguide with step-index profile has been got using field-assisted ion exchange technology while a veriable index prnfile waveguide has been obtained with the latter method. The numerical results show that the optical waveguide with step-index prnfile fabricated by electric field-assisted ion exchange teclmology confines the optical field better. It has more advantages to fabricate active optical devices and integrated optical devices.