畴反转结构片状集成4×4电光开关的设计与仿真

基于铁电体畴反转结构的电光偏转特性,设计了一种片状集成的4×4电光开关,其由四个结构相同的半抛物和四个抛物形微小偏转器集成构成.通过优化抛物形偏转器结构,给出了电光开关的设计参量,电光开关性能通过光束传播法进行仿真模拟,仿真结果表明该开关切实可行.实际应用中,系统误差可以通过电场调节补偿,使光路准确交换.该片状电光开关的整体尺寸为48 mm×2.2mm×0.5 mm(长×宽×高),最大使用电场约13.73 V/μm,适用于高速交换的光互连系统.

Design and Simulation of Planar 4 × 4 Electro-optic Switches Based Ferroelectric Inverted Domains

An integrated 4×4 planar electro optic switch is designed based on the electro optic effect in ferroelectric inverted domains. It integrated four minute half parabola shaped and four parabola shaped deflectors with the same configurations in a ferroelectric wafer. To optimize the design of the parabola shaped deflectors, an appropriate electro optic switch is provided. Its properties of switch and exchange are analyzed using the beam propagation method (BPM). Simulation results show that the 4×4 planar electro optic switch is feasible and the beam deflection errors can be compensated in practice by adjusting applied electric field. The size of the optical switch is 48 mm×2.2 mm×0.5 mm and its maximum applied electric field is about 13.73 V/μm. It has potential applications in high speed optical exchange systems.