Reconfigurable nanocavity formation in graphene-loaded Si photonic crystal structures

被引：5

作者：

Chiba, Hisashi ^{[1
,2
]}

Notomi, Masaya ^{[1
,2
,3
]}

机构：

[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528551, Japan

[2] NTT Corp, NTT Basic Res Labs, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 2430198, Japan

[3] NTT Corp, Nanophoton Ctr, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 2430198, Japan

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 26期

基金：

日本学术振兴会;

关键词：

ION-GEL; MODULATION; TRANSISTORS; CAVITY;

D O I：

10.1364/OE.381608

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and numerically demonstrate that a reconfigurable nanocavity can be created in a graphene-loaded Si photonic crystal waveguide. The cavity formation is caused by the local mode-gap modulation induced by electrostatic gate-tuning of graphene. Although most recent graphene photonic devices are based on a change in the imaginary part of the refractive index, here we make use of a change in the real part of the refractive index for gated graphene. We clarify that nanocavities can be formed in two different cases, red-shifted and blue-shifted tunings. These novel formation mechanisms enable us to create and annihilate a nanocavity in a reconfigurable way by varying the gate voltage, which is promising for novel control in photonic processing. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：37952 / 37963

页数：12

共 35 条

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