| 硅基超材料太赫兹波电光调制器 |
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| 引用本文： | 胡广尧,文天龙,张怀武. 硅基超材料太赫兹波电光调制器[J]. 压电与声光, 2020, 42(3): 299-302 |
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| 作者姓名： | 胡广尧 文天龙 张怀武 |
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| 作者单位： | （1.中国电子科技集团公司第三十八研究所，安徽 合肥 230088；2.中国电子科技集团公司第二十六研究所，重庆 400060） |
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| 基金项目： | 中国电科集团青年拔尖人才基金资助项目（2017 DK1269）；安徽省对外科技合作专项基金资助项目（1804b06020372） |
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| 摘 要： | 该文基于超材料结构设计制造并表征了一款工作在0.34 THz频率下的太赫兹电光调制器。该调制器通过超材料结构加载电压,从而在超材料结构开口处获得强电场用以输运恒定激光照射下硅基产生的光生载流子。通过电压调制信号调制太赫兹波,实现了调制深度从9%增加到50%,其调制速度达到30 kHz。
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| 关 键 词： | 太赫兹 超材料 电光调制器 调制深度 调制速度 |
Silicon based Metamaterial Terahertz Wave Electro optic Modulator |
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| HU Guangyao,WEN Tianlong,ZHANG Huaiwu. Silicon based Metamaterial Terahertz Wave Electro optic Modulator[J]. Piezoelectrics & Acoustooptics, 2020, 42(3): 299-302 |
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| Authors: | HU Guangyao WEN Tianlong ZHANG Huaiwu |
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| Affiliation: | (1. The 38th Institute of China Electronic Technology Group Corporation, Hefei 230088, China;;2. The 26th Institute of China Electronic Technology Group Corporation, Chongqing 400060, China) |
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| Abstract: | A Doppler frequency shift method based on acousto optic modulation for microwave signals was introduced in this paper. This technology is based on microwave photonics signal processing and acousto optic frequency shifting technology. The Doppler frequency shift of microwave signals in the optical domain has been realized and it can be used for generating radar interference signals. The operating frequency range of the system is 2 20 GHz. The test results show that the frequency shift range of the velocity deception interference signals is ±1 MHz and the minimum frequency shift is ± 10 Hz. The system realizes the Doppler frequency shift simulation test of radar pulse signal when the target velocity reduced from 1 200 m/s to 1 000 m/s. |
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| Keywords: | radar countermeasure acousto optic frequency shift Doppler microwave photonics |
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