Ultra-compact integrated terahertz modulator based on a graphene metasurface

被引：15
|
作者：
Kim, Myunghwan [1 ]
Kim, Sangin [2 ]
Kim, Soeun [1 ]
机构：
[1] GIST, Integrated Opt Lab, Adv Pho Ton Res Inst, Gwangju 61005, South Korea
[2] Ajou Univ, Dept Elect & Comp Engn, Suwon 443749, South Korea
来源：
OPTICS LETTERS | 2021年 / 46卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
SILICON; PLASMONICS; PHOTONICS;
D O I：
10.1364/OL.401969
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a new type of a mid-infrared ultra-compact optical modulator composed of a graphene metasurface. Unlike the previously proposed schemes based on loss variation of materials or interference, the proposed one utilizes the unique topological characteristic of the isofrequency contour in the hyperbolic metasurface to modulate the transmission. The designed modulator provides a modulation depth of 10.7 dB, the length of which is 750 nm, corresponding to similar to 1/30 of an operating wavelength. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：605 / 608
页数：4
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