scholarly journals Giant enhancement of tunable asymmetric transmission for circularly polarized waves in a double-layer graphene chiral metasurface

RSC Advances ◽  
2019 ◽  
Vol 9 (58) ◽  
pp. 33775-33780 ◽  
Author(s):  
Jiaxin Zhou ◽  
Yueke Wang ◽  
Mengjia Lu ◽  
Jian Ding ◽  
Lei Zhou
Keyword(s):  
Double Layer ◽  
Asymmetric Transmission ◽  
Circularly Polarized ◽  
Layer Graphene ◽  
Polarized Waves ◽  
Shaped Pattern

In this paper, we propose a structure based on double-layer graphene-based planar chiral metasurface with J-shaped pattern to generate asymmetric transmission, which can reach to 16.64%.

Diode-like asymmetric transmission of circularly polarized waves

2014 ◽  
Vol 116 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Dao-Ya Liu ◽  
Li-Fang Yao ◽  
Xiao-Min Zhai ◽  
Min-Hua Li ◽  
Jian-Feng Dong
Keyword(s):  
Asymmetric Transmission ◽  
Circularly Polarized ◽  
Polarized Waves

Asymmetric transmission of circularly polarized waves in a bi-layered extrinsic chiral metamaterial

2019 ◽  
Vol 34 (10) ◽  
pp. 1410-1419 ◽  
Author(s):  
Jia-Ying Feng ◽  
Liang-Pei Wu ◽  
Sheng-Yuan Shi ◽  
Min-Hua Li ◽  
Jian-Feng Dong
Keyword(s):  
Asymmetric Transmission ◽  
Circularly Polarized ◽  
Polarized Waves ◽  
Chiral Metamaterial

Tunable dual-band asymmetric transmission for circularly polarized waves with graphene planar chiral metasurfaces

2016 ◽  
Vol 41 (13) ◽  
pp. 3142 ◽  
Author(s):  
Zhancheng Li ◽  
Wenwei Liu ◽  
Hua Cheng ◽  
Shuqi Chen ◽  
Jianguo Tian
Keyword(s):  
Dual Band ◽  
Asymmetric Transmission ◽  
Circularly Polarized ◽  
Polarized Waves

High-Efficiency Mutual Dual-Band Asymmetric Transmission of Circularly Polarized Waves with Few-Layer Anisotropic Metasurfaces

2016 ◽  
Vol 4 (12) ◽  
pp. 2028-2034 ◽  
Author(s):  
Jieying Liu ◽  
Zhancheng Li ◽  
Wenwei Liu ◽  
Hua Cheng ◽  
Shuqi Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Dual Band ◽  
Asymmetric Transmission ◽  
Circularly Polarized ◽  
Polarized Waves

scholarly journals Double-layer graphene on photonic crystal waveguide electro-absorption modulator with 12 GHz bandwidth

Nanophotonics ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 2377-2385 ◽  
Author(s):  
Zhao Cheng ◽  
Xiaolong Zhu ◽  
Michael Galili ◽  
Lars Hagedorn Frandsen ◽  
Hao Hu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Double Layer ◽  
Slow Light ◽  
Modulation Depth ◽  
Photonic Crystal Waveguide ◽  
Optical Modulators ◽  
Layer Graphene ◽  
Silicon Photonic ◽  
On Chip ◽  
Silicon Based

AbstractGraphene has been widely used in silicon-based optical modulators for its ultra-broadband light absorption and ultrafast optoelectronic response. By incorporating graphene and slow-light silicon photonic crystal waveguide (PhCW), here we propose and experimentally demonstrate a unique double-layer graphene electro-absorption modulator in telecommunication applications. The modulator exhibits a modulation depth of 0.5 dB/μm with a bandwidth of 13.6 GHz, while graphene coverage length is only 1.2 μm in simulations. We also fabricated the graphene modulator on silicon platform, and the device achieved a modulation bandwidth at 12 GHz. The proposed graphene-PhCW modulator may have potentials in the applications of on-chip interconnections.

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