| 基于狭缝波导的太赫兹场限制能力及频带宽度的研究 |
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| 引用本文： | 叶天明,胡彦茹,蔡斌.基于狭缝波导的太赫兹场限制能力及频带宽度的研究[J].光学仪器,2017,39(4):54-59. |
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| 作者姓名： | 叶天明 胡彦茹 蔡斌 |
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| 作者单位： | 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（61377111，61306118） |
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| 摘 要： | 狭缝波导由于具有将光场限制在中间空气狭缝区域中传输的特性,使其可用来提高太赫兹集成器件的性能。为了分析狭缝波导结构的太赫兹场的传输特性,利用二维有限时域差分法(COMSOL-光学模块)得到了硅材质的狭缝波导在波长为450μm时的太赫兹场的传输模式和频带宽度,并获得了狭缝波导结构参数与狭缝区域太赫兹场限制能力的关系以及与频带宽度的关系。研究结果为太赫兹狭缝波导的设计提供了参考。
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| 关 键 词： | 狭缝波导 太赫兹 集成光学 准导模 频带宽度 |
| 收稿时间： | 2017/1/3 0:00:00 |
Research of terahertz wave confinement and bandwidth in slot waveguide |
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| YE Tianming,HU Yanru and CAI Bin.Research of terahertz wave confinement and bandwidth in slot waveguide[J].Optical Instruments,2017,39(4):54-59. |
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| Authors: | YE Tianming HU Yanru and CAI Bin |
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| Affiliation: | School of Optical-Electrical and Computer Engineering, 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 and School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | Slot waveguide can be used to improve the performance of terahertz integrated device because of its unique light transmitting features in its slot area.In order to analyze the transmission characteristic of slot waveguide structure in terahertz field,the transmission mode distribution and the bandwidth of the silicon slot waveguide in the terahertz light field with a center wavelength of 450μm are achieved by the two-dimensional finite-difference timedomain method (COMSOL-optical module).And then,the corresponding relationships between size parameter and the confinement efficiency as well as transmission bandwidth of terahertz light field are obtained.The result provides a theoretical basis for terahertz slot waveguide design. |
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| Keywords: | slot waveguide terahertz integrated optics quasi-guided mode bandwidth |
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