| 二氧化钛光子晶体波导的太赫兹波传输特性 |
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| 引用本文： | 许艳霞,李高芳,刘荣青,聂小博. 二氧化钛光子晶体波导的太赫兹波传输特性[J]. 光电子．激光, 2020, 31(9): 965-972 |
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| 作者姓名： | 许艳霞 李高芳 刘荣青 聂小博 |
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| 作者单位： | 上海电力大学 电子与信息工程学院,上海 200082,上海电力大学 电子与信息工程学院,上海 200082 ;中国科学院上海技术物理研究 所,红外物理国家重点实验室,上海 200083,上海电力大学 电子与信息工程学院,上海 200082,上海电力大学 电子与信息工程学院,上海 200082 |
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| 基金项目： | 国家自然科学基金(11647023)和上海市自然科学基金(17ZR1411500)资助项目 (1.上海电力大学 电子与信息工程学院,上海 200082； 2.中国科学院上海技术物理研究所,红外物理国家重点实验室,上海 200083) |
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| 摘 要： | 本文应用时域有限差分法研究了二维二氧化钛光 子晶体波导的禁带范围和太赫兹波的 传输特性,分别设计了带隙宽度为0.226 THz 、0.2728 THz和0.316 THz的直线型、直角型和T 型二氧化钛光子晶体波导结构。研究发现,相比传统波导,本文设计的二维二氧化钛光子晶 体波导不仅在直线路径中有较高的太赫兹波传输效率,而且在转角的路径中也有很高的太赫 兹波传输效率。此研究结果为太赫兹器件的设计和制作提供重要理论依据,为高速宽带无线 通信系统的发展提供重要理论借鉴。
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| 关 键 词： | 太赫兹 光子晶体波导 禁带 电场分布 |
| 收稿时间： | 2020-07-15 |
Terahertz transmission characteristics of Titanium dioxide photonic crystal wave guide |
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| XU Yan-xi,LI Gao-fang,LIU Rong-qing and NIE Xia o-bo. Terahertz transmission characteristics of Titanium dioxide photonic crystal wave guide[J]. Journal of Optoelectronics·laser, 2020, 31(9): 965-972 |
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| Authors: | XU Yan-xi LI Gao-fang LIU Rong-qing NIE Xia o-bo |
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| Affiliation: | School of Electronic & Information Engineering,Shanghai University of Elect ric Power,Shanghai 200082,China,School of Electronic & Information Engineering,Shanghai University of Elect ric Power,Shanghai 200082,China ;State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China,School of Electronic & Information Engineering,Shanghai University of Elect ric Power,Shanghai 200082,China and School of Electronic & Information Engineering,Shanghai University of Elect ric Power,Shanghai 200082,China |
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| Abstract: | In this paper,the forbidden band gap range and terahertz wave transmi ssion characteristics of two-dimensional titanium dioxide photonic crystal waveg uide are studied by using the finite-difference time-domain method.The titanium dioxide linear waveguide structure with a band gap width of 0.2262THz,the tit anium dioxide rectangular waveguide structure with a band gap width of 0.2728TH z and the titanium dioxide t-waveguide structure with a band gap width of 0.3166THz are designed.The transmission spectra of different waveguide structures an d the field intensity distribution under specific excitation source frequencies obtained by simulation are compared and analyzed.It is found that compared with the traditional waveguide,the two-dimensional TiO2photonic crystal waveguide designed in this paper has high transmission efficiency of terahertz wave not on ly in the straight path,but also has high transmission efficiency in the rotati on path.The research results provide an important theoretical basis for the des ign and manufacture of terahertz devices,and provide an important theoretical r eference for the development of high-speed broadband wireless communication sys tems. |
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| Keywords: | terahertz photonic crystal waveguide band gap electric field distribution |
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