Ultrafast all-optical plasmonic graphene modulator

被引：18
|
作者：
Zhou, Feng [1 ]
Du, Wei [2 ]
机构：
[1] Zhejiang Univ Media & Commun, Dept Informat Sci & Elect Engn, Hangzhou 310018, Zhejiang, Peoples R China
[2] Univ Arkansas, Dept Comp Sci & Comp Engn, Fayetteville, AR 72701 USA
来源：
APPLIED OPTICS | 2018年 / 57卷 / 23期
关键词：
BROAD-BAND;
D O I：
10.1364/AO.57.006645
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
By utilizing the ultrafast dynamics of the photo-excited electrons in graphene, we theoretically present an ultrafast all-optical plasmonic modulator. With the help of an external pump, the femtosecond thermodynamics of the hot carriers can tune the Fermi level of the graphene sheet in less than 1 ps, which is the dependence of the support for the surface plasmonic wave. This device shows the ability to operate from the near-infrared regime to the farinfrared spectrum with the extinction ratio over 10 dB and the pump fluence of 0.41 mJ/cm(2). Such an ultrafast modulator may pave the way for designing the ultrahigh speed integrated photonics circuits. (C) 2018 Optical Society of America
引用
收藏
页码：6645 / 6650
页数：6
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