Electrically controlled lateral shift by an electro-optic crystal prism is studied theoretically. The resonance point of excitation of guided-wave surface plasmon resonance (GWSPR) can be controlled by altering the refractive index of the prism. That is to say, the positions corresponding to the least reflectivity and the largest lateral shift could be conveniently modulated while the lithium niobate prism is operated in an external electric field. The maximal lateral shift is obtained at the excitation of GWSPR when the thickness of the silver film is optimized. The results of numerical simulations confirm theoretical calculation.

中文翻译：

---

电控横向偏移归因于铌酸锂棱镜的导波表面等离激元共振

理论上研究了由电光晶体棱镜进行的电控横向移动。可以通过改变棱镜的折射率来控制导波表面等离子体共振（GWSPR）的激发共振点。也就是说，当铌酸锂棱镜在外部电场中工作时，可以方便地调节与最小反射率和最大横向偏移相对应的位置。当优化银膜的厚度时，在激发GWSPR时获得最大的横向位移。数值模拟的结果证实了理论计算。