| 基于平行板波导的双槽谐振腔的特性研究 |
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| 引用本文： | 朱亦鸣,高春梅,陈麟.基于平行板波导的双槽谐振腔的特性研究[J].光学仪器,2014,36(4):323-327. |
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| 作者姓名： | 朱亦鸣 高春梅 陈麟 |
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| 作者单位： | 上海理工大学 上海市现代光学系统重点实验室,上海 200093;上海理工大学 光电信息与计算机工程学院,上海 200093 |
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| 基金项目： | 国家自然科学基金资助项目（11174207、61138001、61007059、61205094）；上海市自然科学基金资助项目（11ZR1425000）；国家重大仪器科学专项（2011YQ150021） |
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| 摘 要： | 为使在太赫兹横电波模式下基于平行板波导的对称的双矩形谐振腔结构在滤波、传感等方面有更好的应用,在理论上使用有限元方法对该结构在太赫兹横电波模式下进行了理论上的模拟仿真,并使用时域太赫兹波谱系统在实验上对其理论仿真结果进行了验证。理论和实验均表明在太赫兹横电波模式下基于平行板波导的对称的双矩形谐振腔结构,对谐振频率的选择以及谐振频率Q值的大小均与两平行板的板间距有关,即随着板间距的增大,谐振频点均出现了红移,红移的速率为136GHz/mm,并且其Q值也随着板间距的增大而变大。此结果对太赫兹横电波模式下基于平行板波导的对称的双矩形谐振腔结构在滤波、传感等方面的应用提供了参数上的依据。
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| 关 键 词： | 谐振腔 平行板波导 太赫兹 有限元 |
| 收稿时间： | 2014/4/20 |
Terahertz transmission properties of parallel-plate waveguide with double symmetrical resonant cavities |
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| ZHU Yiming,GAO Chunmei and CHEN Lin.Terahertz transmission properties of parallel-plate waveguide with double symmetrical resonant cavities[J].Optical Instruments,2014,36(4):323-327. |
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| Authors: | ZHU Yiming GAO Chunmei and CHEN Lin |
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| Affiliation: | Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | In order to achieve the filtering and sensing applications based on terahertz (THz) transverse-electric mode parallel-plate waveguide with double symmetrical resonant cavities,we simulated the transmission spectra of this structure by using finite element method,and verified them experimentally by using THz time domain spectroscopy. We found that the resonant frequencies and Q factor of the symmetrical terahertz double rectangular resonant cavities depend directly on the separation between plates. With the increase of separation,the resonance moves to the lower frequencies with the rate of 136 GHz/mm as well as Q factor is increased. All these results may benefit the sensing and filtering applications in THz region. |
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| Keywords: | resonant cavity parallel-plate waveguide terahertz finite element method |
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