低开关电压嵌套型微环谐振电光开关  

Low Switching Voltage Nested Micro-Ring Resonant Electro-Optic Switch

作　　者：岳云龙 胡亚琦[1] 曹博一 马占书 YUE Yun-long;HU Ya-qi;CAO Bo-yi;MA Zhan-shu(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;China Railway Signal & Communication Engineering Bureau Group Beijing Center of Research Design & Test Co.,Ltd.,Beijing 100070,China)

机构地区：[1]兰州交通大学电子与信息工程学院,兰州730070 [2]通号工程局集团北京研发设计实验中心有限公司,北京100070

出　　处：《光通信研究》2019年第3期42-46,共5页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61366006);甘肃省高等学校科研资助项目(216132)

摘　　要：在传统的基于微环的电光开关结构中,可通过设计不同微环与直波导间的位置来实现光通信的开关功能,但其普遍存在开关电压过高的现象,浪费资源。文章利用耦合模理论、电光调制理论和微环谐振理论,应用传输矩阵理论方法,提出了一种嵌套型双波导的微环谐振电光开关的器件模型,在谐振波长为1 552 nm的情况下,对该器件进行了仿真分析。仿真结果表明,该器件模型具有非常小的开关电压(仅为1 V),串扰<-35 dB,插入损耗<4 dB,时域响应总时间为5.33 ps,其中微环的上升时间和下降时间仅为0.25 ps。所提出的电光开关结构具有开关电压低、响应时间短和频谱带宽大的特性,能提高密集波分复用系统的性能。In the traditional micro-ring electro-optic switch structure, the function of switching in optical communication system is realized by designing different positions between micro-ring and direct waveguide. However, the switching voltage is so high that it wastes resources. Based on the coupled mode theory, electro-optic modulation theory, micro-ring resonance theory, and transfer matrix theory, a device model of nested micro-ring dual-channel electro-optic switch is proposed in this paper. We conduct a simulated analysis of this device at the resonant wavelength of 1 552 nm. The simulation results show that the device model has a very small switching voltage of only 1 V with crosstalk less than -35 dB and insertion loss less than 4 dB. The total time domain response is 5.33 ps with rise and fall time of only 0.25 ps. The structure has the characteristics of low switching voltage, short response time and large spectral bandwidth, which enhances the performance of dense wavelength division multiplexing system.

关 键 词：光纤光学 嵌套型微环 电光开关 开关电压 时域响应 

分 类 号：TN253[电子电信—物理电子学]