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- Title
Analysis of Mid-Infrared Surface Plasmon Modes in a Graphene-Based Cylindrical Hybrid Waveguide.
- Authors
Liu, Jian-Ping; Zhai, Xiang; Wang, Ling-Ling; Li, Hong-Ju; Xie, Fang; Lin, Qi; Xia, Sheng-Xuan
- Abstract
A graphene-based cylindrical hybrid surface plasmon polariton waveguide, composed of a silicon nanowire core surrounded by a silica layer and then a graphene layer, is investigated using the finite-difference time-domain method. The analytical solutions and the numerical simulation show that an ultra-small mode area and a large propagation length can be achieved with this waveguide. Utilizing the perturbation theory of coupled mode, we demonstrate that the six lowest-order coupling modes originate from the coupling of the three lowest-order single-waveguide modes, and the m = 1 order yy-coupling mode possesses the maximum coupling length and the minimum crosstalk. This waveguide can be used for photonic integrated circuits in the mid-infrared range.
- Subjects
GRAPHENE; SURFACE plasmons; PLASMA waveguides; TIME-domain analysis; ELECTROMAGNETIC spectrum
- Publication
Plasmonics, 2016, Vol 11, Issue 3, p703
- ISSN
1557-1955
- Publication type
Article
- DOI
10.1007/s11468-015-0095-z