基于光栅的微环谐振腔快慢光效应  

Fast-and Slow-light Effect in the Micro-ring Resonator with Grating

作　　者：陈心[1] 李齐良[1] 宋俊峰[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2016年第5期22-25,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(10904028);浙江省自然科学基金资助项目(Y1110078)

摘　　要：基于微环谐振腔的耦合模理论,在不考虑谐振腔损耗的情况下,分析了加入光栅下的微环谐振腔的传输特性,包括光栅和耦合器的耦合系数对输出信号的时延特性、相移特性、透射率的影响.在没有光栅加入的情况下,微环谐振腔中不会有快光产生.研究表明,随着光栅的加入,输出光不仅有慢光同时还有快光的存在,并且慢光的延时量也发生了改变.通过给定微环谐振腔和光栅的耦合系统的耦合系数以及改变入射信号光的频率,可以改变输出光的延时量.Based on the coupled mode theory of the micro-ring resonator,we analyze the transmission characteristics of the micro-ring resonator with grating,such as the influence of the grating and coupling coefficient on the transmission coefficient,time delay and phase shift in this paper.We find that there is no fast light in the micro-ring resonator without the grating.However,in the micro-ring resonator with the grating,both fast-and slow-light is present and time delay of slow light changes.And finally we conclude that the time delay of the signal light can be adjusted by changing the frequency of the incident light and selecting the coupling coefficient of the coupled system in the micro-ring resonator and the grating.

关 键 词：微环谐振腔 快光 慢光 光栅 

分 类 号：TN253[电子电信—物理电子学]