| 左手介质矩形波导的吸收特性 |
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| 引用本文： | 唐婷婷,陈福深.左手介质矩形波导的吸收特性[J].发光学报,2009,30(4):441-446. |
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| 作者姓名： | 唐婷婷 陈福深 |
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| 作者单位： | 1. 电子科技大学 宽带光纤传输与通信网技术教育部重点实脸室, 四川 成都 611731;2. 成都信息工程学院 光电技术学院, 四川 成都 610225 |
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| 基金项目： | The project supported by National Natural Science Foundation of China(60771045)~~ |
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| 摘 要： | 采用微扰法研究了左手介质矩形波导的吸收特性。由于色散方程的限制,左手介质波导不能传输基模,它的吸收特性也与右手介质矩形波导明显不同。结果发现, 模式的衰减系数随长宽比(a/b)的增加而减小,而在右手介质波导中结果恰恰相反。除此之外,当不同模式的光波在同一左手介质矩形波导中传输时,每一模式都对应着相邻很近的吸收峰和吸收谷。同时高阶模的衰减系数较低阶模的大。但是,当不同模式的光波在同一右手介质矩形波导中传输时,它们的衰减曲线随着波导宽度的增加而振荡的变化,并且趋近于芯层衰减系数。另外一方面,在右手波导中,高阶模式的衰减系数较低阶模式小。
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| 关 键 词： | 吸收峰 衰减谷 衰减系数 微扰法 矩形波导 |
| 收稿时间： | 2009-04-01 |
Absorption Property in Rectangular Waveguide with Left-handed Material |
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| TANG Ting-ting,CHEN Fu-shen.Absorption Property in Rectangular Waveguide with Left-handed Material[J].Chinese Journal of Luminescence,2009,30(4):441-446. |
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| Authors: | TANG Ting-ting CHEN Fu-shen |
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| Institution: | 1. Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks Ministry of Education, UEST of China, Chengdu 611731, China;2. Optoelectronic Technology Department of CUIT, Chengdu 610225, China |
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| Abstract: | In this paper,the absorption property of the left-handed material (LHM) rectangular waveguide was studied by use of the perturbation method,and other novel properties were revealed. Due to the restriction of the dispersion equations,the LHM waveguide can not support the fundamental modes,and its absorption property is quite different from that of RHM (right-handed material) rectangular waveguide. It was shown that Ey11 mode's attenuation coefficient changes from large to small as the length to width ratio (... |
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| Keywords: | absorption peak attenuation trough attenuation coefficient perturbation method rectangular waveguide |
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