Tuning of surface plasmon polaritons beat length in graphene directional couplers

被引：23

作者：

Auditore, Aldo ^{[1
]}

de Angelis, Costantino ^{[1
]}

Locatelli, Andrea ^{[1
]}

Aceves, Alejandro B. ^{[2
]}

机构：

[1] Univ Brescia, Dipartimento Ingn Informaz, I-25123 Brescia, Italy

[2] So Methodist Univ, Dept Math, Dallas, TX 75275 USA

来源：

OPTICS LETTERS | 2013年 / 38卷 / 20期

关键词：

WAVE-GUIDES; PHOTONICS; POLARIZER; MODULATOR;

D O I：

10.1364/OL.38.004228

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the tuning of the coupling of surface plasmon polaritons between two spatially separated graphene layers. We demonstrate that by slightly changing the chemical potential, a graphene coupler can switch from the bar to the cross state; as a consequence, the coupling coefficient in such structures can be easily controlled by means of an applied electrical signal. (C) 2013 Optical Society of America

引用

页码：4228 / 4231

页数：4

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