用模耦合理论讨论低压驱动高效LiNbO_3波导的特性  

Discussion on the Properties of Efficient LiNbO_3 Waveguide with Low Drive Voltage by Coupled-mode Theory

作　　者：徐国昌[1] 

机构地区：[1]东南大学电子工程系,南京210018

出　　处：《激光与红外》1992年第4期40-43,共4页Laser & Infrared

摘　　要：本文通过深入分析模耦合理论及其有关参量的关系,讨论了LiNbO_3介质波导在低电压驱动下高效率的模式转换特性与滤波特性。指出了合理的电极结构设计可显著地减小电极间距与提高交迭系数,大大地减小驱动电压。The coupled-mode theory and the relation between these couple parameters have been analysised carefully. The properties of efficient mode conversion and filter in LiNbO_3 dielectric waveguide with low drive voltage are discussed It follows that the interelectrode gap can be decreased significantly and the overlap coefficient improved and then the drive voltage is reduced considerably by rational design of the electrode structure.

关 键 词：模耦合理论 介质波导 模式 滤波器 

分 类 号：TN713[电子电信—电路与系统]