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| 太赫兹波段光子晶体温度传感器的研究 |
| Study on photonic crystal-based temperature sensor at terahertz band |
| 投稿时间：2018-04-11 |
| DOI：10.3969/j.issn.1005-5630.2019.01.010 |
| 中文关键词: 光子晶体 太赫兹 F-P谐振 温度传感器 |
| 英文关键词:photonic crystal terahertz F-P resonance temperature sensor |
| 基金项目: |
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| 摘要点击次数: 3734 |
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| 中文摘要: |
| 使用对太赫兹波段有吸收效应的掺杂硅设计光子晶体结构，使得在光子带隙内的光波被吸收，并加上金属反射镜面将光子晶体的吸收峰和法布里-珀罗（F-P）谐振吸收峰结合，使此结构在0.29～0.31 THz波段达到宽频吸收，并且在0.31～0.34 THz波段通过测量光子晶体的反射率可以计算出对应温度。在使用商业电磁仿真软件CST2014仿真和优化参数后，反射率对应温度变化的变化范围是0.09～0.36，即最大值与最小值有4倍之差，这一特性表明，此结构的反射率变化随温度变化十分明显，是一款十分灵敏的温度传感器。此外，在入射角不大于40°时，结构性能依然良好。 |
| 英文摘要: |
| In this paper, the photonic crystal structure was designed using the doped silicon which has absorption effect on terahertz band. As a result, the light wave in the photonic band gap was absorbed. In addition, the reflective mirror of metal facilitated the combination of the absorption peak of photonic crystal and Fabry-Perot (F-P) resonant absorption peak. Thus, as this structure was not affected by temperature changes in 0.31-0.34 THz band, it could achieve broadband absorption. Moreover, the 0.29-0.31 THz band had the temperature sensing function. By using the commercial electromagnetic simulation software CST2014 to stimulate the optimization parameter, a photonic crystal-based temperature sensor with large incidence angle was designed. The reflectivity would change with the linear variation of temperature. |
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