Absorption Property in Rectangular Waveguide with Left-handed Material

TANG Ting-ting; CHEN Fu-shen

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Absorption Property in Rectangular Waveguide with Left-handed Material

paper | 更新时间：2020-08-12

- Absorption Property in Rectangular Waveguide with Left-handed Material
- Chinese Journal of Luminescence Vol. 30, Issue 4, Pages: 441-446(2009)
- 作者机构：
  
  1. 成都信息工程学院光电技术学院, 四川成都 610225
  2. 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
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN252
- Received：01 April 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 August 2009，
  
  Published：30 August 2009
- 稿件说明：
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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.
DOI：

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. DOI：

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。

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

mode's attenuation coefficient changes from large to small as the length to width ratio (

a/b

) grows

while the result is reverse in RHM rectangular waveguide. In addition

when different modes are propagating in the same LHM waveguide there is an absorption peak for every mode

and in a small neighborhood of this peak

an attenuation trough can be found. In this case

higher-order modes possess larger attenuation coefficient than lower-order modes. But

when different modes are propagating in the RHM waveguide the attenuation curves are changing vibrantly and approach the core attenuation coefficient with the increasing of the width

. Otherwise

higher-order modes possess smaller attenuation coefficients than lower-order modes in RHM waveguide.

关键词

Keywords

references

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. Ma Chunsheng, Liu Shiyong. Optical Waveguide Theory [M]. Changchun: Jilin University Press, 2006, 215-217.

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