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应用保角变换法、镜像法、耦合模理论和电光调制理论设计了一种推挽电极聚合物脊形波导定向耦合电光开关,阐述了基本结构和工作原理,给出了器件的设计和优化过程,主要分析了耦合长度、开关电压、输出光功率、插入损耗、串扰等特性.为了实现正常的开关功能,讨论了制作公差、波谱漂移以及单模光纤耦合损耗对器件性能的影响.模拟结果表明,所设计的开关的耦合长度为3082μm,开关电压为2.14V;插入损耗小于1.14dB,串扰小于-30dB.与BPM仿真结果以及实验结果的对比表明,文中提出的波导和电极的理论分析与计算方法具有较高的精度和可行性.
A kind of push-pull electrode polymer ridge waveguide directional coupling electro-optic switch was designed by conformal mapping, mirroring, coupled mode theory and electro-optic modulation theory. The basic structure and operating principle were described. The design and optimization of the device were given , The characteristics of coupling length, switching voltage, output optical power, insertion loss and crosstalk are mainly analyzed.In order to realize the normal switching function, the influence of fabrication tolerance, spectral drift and single-mode fiber coupling loss on the device performance is discussed. , The design of the switch coupling length of 3082μm, the switching voltage of 2.14V; insertion loss of less than 1.14dB, crosstalk less than -30dB.Compared with the BPM simulation results and experimental results show that the proposed waveguide and electrode theoretical analysis and calculation The method has higher accuracy and feasibility.