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利用级联的线性电光效应对光进行控制是一种非常有效而且常用的控制光的手段。对于周期性畴反转铌酸锂(PPLN)一维光子晶体,在平行于光轴方向施加电场可周期性改变折射率大小,形成电光光子晶体结构;在垂直于光轴方向施加电场不仅可以改变折射率椭球大小,同时可以周期性改变折射率椭球主轴方向。综述了部分已报道的基于周期性的级联电光效应的应用,介绍了其在可调的手性器件、全光逻辑门、基于快慢光的时间隐身和非线性光学等方面的应用,展望了级联电光效应在未来集成光子芯片中的潜在应用。
Using cascaded linear electro-optical effects to control light is a very effective and commonly used means of controlling light. For periodic domain inversion of one-dimensional photonic crystals of lithium niobate (PPLN), an electric field parallel to the optical axis can periodically change the refractive index to form an electro-optic photonic crystal structure. Applying an electric field perpendicular to the optical axis can not only change Refractive index ellipsoid size, while the refractive index ellipsoid can be changed periodically the main axis direction. The applications of some reported periodic electro-optic effects based on cascades are reviewed, and their applications in tunable chiral devices, all-optical logic gates, time stealth and slow optics based on fast and slow light are introduced The potential application of cascaded electro-optic effect in integrating photonic chips in the future.