Tunable slow light based on detuned coupling between graphene nanoribbon and square ring splitting modes

We proposed and numerically investigated a newly slow light structure with graphene doublet detuned coupling effect. The novelty and uniqueness of the proposed structure is that the bandwidth and group index can be enhanced simultaneously by changing the length or chemical potential of the nanoribbo...

Full description

Saved in:
Bibliographic Details
Published in:Optical and quantum electronics 2018-12, Vol.50 (12), p.1-10, Article 444
Main Authors: Zhuang, Huawei, Xu, Hongkui, Kong, Fanmin, Wang, Yuling, Gao, Muzhi, Li, Kang
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical potential
Computer Communication Networks
Coupling
Electrical Engineering
Graphene
Lasers
Nanoribbons
Optical Devices
Optics
Organic chemistry
Photonics
Physics
Physics and Astronomy
Rings (mathematics)
Splitting
Standing waves
Terahertz frequencies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We proposed and numerically investigated a newly slow light structure with graphene doublet detuned coupling effect. The novelty and uniqueness of the proposed structure is that the bandwidth and group index can be enhanced simultaneously by changing the length or chemical potential of the nanoribbon resonator. The maximum group index can attain to 131 at μ c  = 0.145 eV with the bandwidth of 0.85 THz. By means of the standing wave distribution of square ring splitting modes, the group indices can be enhanced at one window and suppressed at another by adjusting the coupling position of nanoribbon. The proposed structure would have potential prospect in realizing plasmonic filter, optical nonlinearity, optical buffering and storage devices at terahertz frequencies.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-018-1708-5