| 模型对FDTD模拟红外带通滤波器性能的影响 |
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| 引用本文： | 王琳,周献庭,张林,强锐.模型对FDTD模拟红外带通滤波器性能的影响[J].武汉理工大学学报,2006,28(3):100-102. |
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| 作者姓名： | 王琳 周献庭 张林 强锐 |
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| 作者单位： | 1. 武汉理工大学信息工程学院,武汉,430070
2. 美国休斯顿大学电子与计算机工程系,休斯顿 |
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| 基金项目： | 湖北省自然科学基金;国家重点实验室基金 |
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| 摘 要： | 采用三维时域有限差（finite-difference time—domain，FDTD）算法模拟了由十字叉形开口的金膜周期结构组成的红外带通滤波器光谱性能。该算法采用Z变换技术利用Lorentz-Drude模型、Drude模型和理想导体模型描述了金膜在红外频率的介电常数，模拟了红外带通滤波器的透射性能，同测量结果进行了比较．结果表明，利用Lorentz—Drude模型计算的透射率同测量数据吻合得起好。
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| 关 键 词： | 时域有限差分 模型与模拟 红外带通滤波器 |
| 文章编号： | 1671-4431(2006)03-0100-03 |
| 修稿时间： | 2005年11月20 |
Models Effect on the Spectral Behavior of Infrared Bandpass Filters Using a Three-dimensional FDTD Method |
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| WANG Lin,ZHOU Xian-ting,ZHANG Lin,QIANG Rui.Models Effect on the Spectral Behavior of Infrared Bandpass Filters Using a Three-dimensional FDTD Method[J].Journal of Wuhan University of Technology,2006,28(3):100-102. |
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| Authors: | WANG Lin ZHOU Xian-ting ZHANG Lin QIANG Rui |
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| Abstract: | Using a three-dimensional finite-difference time-domain(FDTD)algorithm modeled the spectral behavior of infrared bandpass filters consisting of the openings of cross-shaped period structures in a thin gold film.This algorithm incorporates the Lorentz-Drude models and Drude models and perfect electrical conductor(PEC) models to characterize the electrical properties of thin gold film in IR frequencies,and simulates the transmission properties of infrared bandpass filters,then compares with measured data.The results show that the Lorentz-Drude models can accurately describe the frequency-dependent permittivity of the thin gold film at IR frequencies,and the computed transmission spectrum in Lorentz-Drude models is excellent agreement with measured data. |
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| Keywords: | FDTD modeling and simulating infrared bandpass filters |
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