SOI环形光波导谐振腔双层石墨烯调制器(英文)  

SOI-ring waveguide-coupled double-layer graphene modulator

作　　者：李艳娜[1,2] 汤跃[1,2] 韦丽萍[1,2] 王永华[1,2] 刘耀英[1,2] 薛晨阳[1,2] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051 [2]中北大学电子测试技术国防科技重点实验室,太原030051

出　　处：《强激光与粒子束》2015年第2期52-57,共6页High Power Laser and Particle Beams

基　　金：supported by National Natural Science Foundation of China(91123036)

摘　　要：在片上光互连系统中,电光调制器起到将电信号调制为光信号的作用,是光互联系统中的核心部件之一。调制器的3dB带宽决定着载波所能携带的最大信息量,是衡量调制器性能的核心参数。利用石墨烯和高Q环形谐振腔设计成具有CMOS结构的新型调制器,其集成了石墨烯的宽带吸收、载流子迁移率高等材料优势和高Q值环形光学谐振腔的光程放大的结构优势,通过理论计算,其3dB调制带宽可以达到100GHz。同时,基于微环谐振腔的石墨烯电光调制器结构可以方便的与光互联系统中的波分复用器相集成,从而提升片上光互联系统的集成度和降低技术复杂性。The electro-optic modulator is an important component in the optical interconnected system,which plays a role in controlling optical signal by electrical pulse.The 3dB bandwidth is a representative performance parameter that determines the maximum amount of information that can be carried in the input light.An electro-absorption optical modulator concept based upon a dual-graphene layer is presented.The device consists of a silicon-on-insulator micro-ring waveguide resonator upon which two graphene layers reside,separated by a thin insulating region.The lower graphene acts as a tunable absorber,while the upper layer functions as a transparent gate electrode.Calculations based upon realistic graphene material properties and the optical path amplification of micro-ring waveguide resonator show that 3dB bandwidths over 100 GHz are achievable at nearλ=1.55μm.In addition,the structure of micro-ring waveguide resonator can be easily integrated with optical Wavelength Division Multiplexing(WDM)interconnection system,so as to enhance the degree of integration and reduce technical complexity.

关 键 词：电光调制器 微环谐振腔 石墨烯 3DB带宽 

分 类 号：TN761[电子电信—电路与系统]