| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Coupling of Cutoff Modes in a Chain of Nonlinear Metallic Nanorods |
| Wei-Na Cui1,2, Hong-Xia Li1, Min Sun1, Yong-Yuan Zhu2** |
1Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094
2Key Laboratory of Modern Acoustics, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093
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| Cite this article: |
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Wei-Na Cui, Hong-Xia Li, Min Sun et al 2016 Chin. Phys. Lett. 33 124101 |
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Abstract We study the coupling of cutoff modes in a chain of metallic nanorods embedded in a Kerr nonlinear optical medium with strong near-field interactions analytically. Based on a quasidiscreteness approach, we derive a system of two coupled nonlinear Schr?dinger equations governing the evolution of the envelopes of these modes. It is shown that this system supports a variety of subwavelength plasmonic lattice vector solitons of the bright-bright, bright-dark, dark-bright, and dark-dark type through a cross-phase modulation. It is also shown that the existence of different solitons depends strongly on the gap width scaled for the rod radius and the type of nonlinearity of the embedded medium.
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Received: 04 September 2016
Published: 29 December 2016
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| PACS: |
41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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63.20.Pw
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(Localized modes)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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| Fund: Supported by the National Basic Research Program of China under Grant No 2012CB921502, the National Natural Science Foundation of China under Grant Nos 11374150, 11074120, 11274163 and 11274164, and the Priority Academic Program Development of Jiangsu Higher Education Institutions of China. |
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