| Pure Reflection and Refraction of a Surface Polariton by a Matched Waveguide Structure |
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| 作者姓名： | 马中团 王沛 曹勇 汤洪高 明海 |
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| 作者单位： | Institute of Photonics, University of Science and Technology of China, Hefei 230026 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10474093, the Natural Science Foundation of China under Grant No 90206002, and the Special Funds for Major State Basic Research Programme of China under Grant No 2005CCA04200. |
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| 摘 要： |
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| 关 键 词： | 纯反射 折射 表面极化 匹配波导结构 基本原理问题 |
| 收稿时间： | 2006-04-13 |
| 修稿时间： | 2006-04-13 |
Pure Reflection and Refraction of a Surface Polariton by a Matched Waveguide Structure |
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| MA Zhong-Tuan, WANG Pei, CAO Yong, TANG Hong-Gao, MING Hai.Pure Reflection and Refraction of a Surface Polariton by a Matched Waveguide Structure[J].Chinese Physics Letters,2006,23(9):2545-2548. |
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| Authors: | MA Zhong-Tuan WANG Pei CAO Yong TANG Hong-Gao MING Hai |
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| Affiliation: | Institute of Photonics, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | We study the fundamental problem of reflection and refraction of a surface polariton as it strikes the interface between two waveguide structures. By making the two waveguide structures match to each other, coupling of surface polaritons to radiating modes is cancelled, and the reflected and transmitted waves consist of only surface modes. The reflection and transmission coefficients are calculated, and negative refraction of surface polaritons is demonstrated. Finite-difference time-domain numerical simulations are also performed to verify the analytical results. As one of the applications of the matched waveguide structure, a square corner reflector for phase-retardation-free reflection of surface polaritons is proposed. |
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