Ultrafast metamaterial all-optical switching based on coherent modulation

被引：4

作者：

Wang, Tianrang ^{[1
]}

Tang, Jian ^{[2
]}

Chen, Ming ^{[1
]}

Xiong, Jianfeng ^{[1
]}

Wang, Hexuan ^{[1
]}

Xu, Jie ^{[1
]}

Qu, Shiliang ^{[1
]}

Cheng, Yu ^{[1
]}

Yuan, Libo ^{[1
]}

机构：

[1] Guilin Univ Elect Technol Guilin, Sch Optoelect Engn, Guangxi Key Lab Optoelect Informat Proc, Guilin 541004, Peoples R China

[2] Guangxi Normal Univ, Sch Phys Sci & Technol, Guilin 541004, Peoples R China

来源：

OPTICS EXPRESS | 2022年 / 30卷 / 06期

基金：

中国国家自然科学基金;

关键词：

MAGNETIC PLASMON RESONANCE; METASURFACE; GRAPHENE;

D O I：

10.1364/OE.449960

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a demonstration of an ultrafast all-optical switching with unique light control effects. The all-optical switching consists of a gold film with asymmetric split rings and a silica substrate. The device effectively controls the transmission and absorption of continuous pulses in the communication band (1200-1800 nm) and short pulses with a pulse duration of 80 fs by using the interaction of two coherent beams on nano-metamaterials with a thickness of only 50 nm. The metamaterial can achieve more than 90 % output control under continuous light irradiation. When the pulse duration is 80 fs, the switching contrast ratio is greater than 3 : 1 and the modulation bandwidth is greater than 12.5 THz. Switching time can be on the order of femtosecond. This paper provides a new structure for ultra-high speed optical data processing components in coherent networks. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：9284 / 9297

页数：14