注：河北省教育厅重点基金项目（No. ZD2017250）；
广东开放大学（广东理工职业学院）校级课题（No. 1834）；
广东开放大学（广东理工职业学院）校级课题（No. 1608）
作者：史振江1,2,3，李志全1,2，陆飞3
单位：1. 燕山大学智能控制系统与智能装备教育部工程研究中心，河北秦皇岛 066000；
2. 燕山大学工业计算机控制工程河北省重点实验室，河北秦皇岛 066000；
3. 广东开放大学（广东理工职业学院）工程技术学院，广东广州 510091
中图分类号：TP212.14；TN253　       
文献标识码：A　  
文章编号：1006-883X(2020)08-0007-05
收稿日期：2020-06-04

摘要：基于石墨烯的光电子器件与光信号能够达到强烈的相互作用、超宽带的操作范围和高速率操作。通过控制石墨烯的外加偏置电压可以较容易的改变石墨烯的费米能级和化学势，进而改变其光吸收能力以及光波导中输出光强的控制能力。微环谐振腔能将一定频率的光在环内局域并进行循环振荡，利用微环谐振腔的谐振特性可以实现多种光信号传感和处理功能。本文将石墨烯与微环谐振腔结合在一起构成复合波导结构，重点研究其电光调制特性，通过理论推导和仿真实验得到，石墨烯偏置电压改变0.011eV时，微环谐振腔的电光调制消光比可以达到2.8dB。
关键词：石墨烯；微环谐振腔；费米能级

Research on Optical Transmission Characteristics of Microring Resonator with Silicon Waveguide
SHI Zhen-jiang1,2,3, LI Zhi-quan1,2, LU Fei3
1. Engineering Research Center of the Ministry of Education for Intelligent Control System and Intelligent Equipment, Yanshan University, Qinhuangdao 066000, China; 2. Key Laboratory of Industrial Computer Control Engineering of Hebei Province, Yanshan University Qinhuangdao 066000, China; 3. Dept. of Engineering Technology, Open University of Guangdong (Guangdong Polytechnic Institute), Guangzhou 510091, China
Abstract: Graphene based optoelectronic devices and optical signals can achieve strong interaction, ultra wide band operation range and high-speed operation. By controlling the applied bias voltage of graphene, the Fermi energy level and chemical potential of graphene can be easily changed, and then the light absorption ability and the output light intensity control ability of the waveguide can be changed. Micro ring resonator can localize the light with a certain frequency in the ring and oscillate circularly. It can realize a variety of optical signal sensing and processing functions by using the resonance characteristics of micro ring resonator. In this paper, graphene and microring resonator are combined to form a composite waveguide structure, and its electro-optic modulation characteristics are mainly studied. Through theoretical derivation and simulation experiments, the electro-optic modulation extinction ratio of microring resonator can reach 2.8dB when the bias voltage of graphene is changed by 0.011ev.
Key words: graphene; microring resonator; fermi level

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备注：2020年 第26卷 第08期