把人造传输线的观点引入电光调制器，实现相速度的匹配，是近年来才兴起的一个新的分支。它既继承了传统集总参数的部分特性，又实现了行波电极调制。讨论了这种新型电光调制器的相速度匹配原理和电极的设计方法，并给出了一个设计实例 The introduction of artificial transmission line point of view into the electro-optic modulator to achieve phase velocity matching, is only emerging in recent years, a new branch. It not only inherits some characteristics of the traditional lumped parameters, but also realizes the traveling wave electrode modulation. The phase velocity matching principle and the electrode design method of the new electro-optic modulator are discussed, and a design example