| High-Dimensional Nonlinear Envelope Equations and Nonlinear Localized Excitations in Photonic Crystals |
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| 作者姓名： | HANG Chao HUANG Guo-Xiang |
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| 作者单位： | Department of Physics, East China Normal University, Shanghai 200062, China |
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| 基金项目： | The project supported by National Natural Science Foundation of China under Grant Nos. 90403008 and 10434060, and the State Key Major Research and Development Program of China |
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| 摘 要： |
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| 关 键 词： | 光子晶体 非线性局部结构 光学脉冲 短波激励 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2005-10-08 |
High-Dimensional Nonlinear Envelope Equations and Nonlinear Localized Excitations in Photonic Crystals |
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| HANG Chao HUANG Guo-Xiang.High-Dimensional Nonlinear Envelope Equations and Nonlinear Localized Excitations in Photonic Crystals[J].Communications in Theoretical Physics,2006,46(1):149-154. |
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| Authors: | HANG;Chao;HUANG;Guo-Xiang |
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| Abstract: | We investigate the nonlinear localized structures of optical pulses propagating in a one-dimensional photonic crystal with a quadratic nonlinearity. Using a method of multiple scales we show that the nonlinear evolution of a wave packet, formed by the superposition of short-wavelength excitations, and long-wavelength mean fields, generated by the self-interaction of the wave packet, are governed by a set of coupled high-dimenslonal nonlinear envelope equations, which can be reduced to Davey-Stewartson equations and thus support dromionlike high-dimensional nonlinear excitations in the system. |
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| Keywords: | photonic crystal dromion |
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