High-performance traveling-wave electroabsorption modulators utilizing mushroom-type waveguide and periodic transmission line loading  

作　　者：Kambiz Abedi 

机构地区：[1]Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Shahid Beheshti University

出　　处：《Optoelectronics Letters》2012年第3期176-178,共3页光电子快报（英文版）

摘　　要：For the first time, periodic loaded electrodes and mushroom-type waveguide are combined to improve the performance of traveling-wave electroabsorption modulators (TWEAMs) based on the asymmetric intra-step-barrier coupled double strained quantum well (AICD-SQW). The electrical modulation response of periodic mushroom-type TWEAM is obtained by using equivalent circuit model, and is compared with simulation result of conventional mushroom-type TWEAM counterpart. The equivalent circuit model simulation results indicate that for the exemplary modulation length of 300 mm, the mushroom-type TWEAM with periodic transmission line loading can achieve much wider bandwidth about 99.7 GHz and 43.1 GHz than the conventional counterpart with about 43 GHz and 33 GHz for 35 W and 45 W terminations, respectively.For the first time, periodic loaded electrodes and mushroom-type waveguide are combined to improve the performance of traveling-wave electroabsorption modulators （TWEAMs） based on the asymmetric intra-step-barrier coupled double strained quantum well （AICD-SQW）. The electrical modulation response of periodic mushroom-type TWEAM is obtained by using equivalent circuit model, and is compared with simulation result of conventional mushroom-type TWEAM counterpart. The equivalent circuit model simulation results indicate that for the exemplary modulation length of 300 μm, the mush- room-type TWEAM with periodic transmission line loading can achieve much wider bandwidth about 99.7 GHz and 43.1 GHz than the conventional counterpart with about 43 GHz and 33 GHz for 35 Ωand 45 Ωterminations, respectively.

关 键 词：行波电吸收调制器 输电线路 蘑菇 性能 负荷 波导 等效电路模型 应变量子阱 

分 类 号：TN761[电子电信—电路与系统]