典型文献
Enhanced absorption and electrical modulation of graphene based on the parity-time symmetry optical structure
文献摘要：
In order to realize the ultrastrong absorption of graphene with electrical modulation properties,we designed a composite structure of graphene and parity-time[PT]symmetry photonic crystal,which is achieved by placing the graphene layer on the top layer of the PT symmetry photonic crystal.In this paper,the absorption properties of graphene and the electrical modulating properties of the structure were theoretically analyzed based on the transfer matrix method.The result shows that the proposed structure can achieve the absorption of 31.5 dB for the communication wavelength of 1550 nm;meanwhile,by setting the electric field intensity to-±0.02 V/nm,the absorption of graphene can be largely modulated to realize an electrically switchable effect,the modulation depth of graphene absorption can reach nearly 100％,and the operation speed is also close to 8.171 GHz.This investigation provides a novel approach to design graphene-based optoelectronic devices and optical communication devices.
文献关键词：
中图分类号：
作者姓名：
Lingjun Yi;Changhong Li
作者机构：
School of Electronic Information,Qingdao University,Qingdao 266071,China
文献出处：
引用格式：
[1]Lingjun Yi;Changhong Li-.Enhanced absorption and electrical modulation of graphene based on the parity-time symmetry optical structure)[J].中国光学快报（英文版）,2022(02):136-141
A类：
ultrastrong
B类：
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AB值：
0.482448
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