| 纳秒级脉冲电压的电光测量 |
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| 引用本文： | 郭小明,苏进喜,罗承沐,张贵新. 纳秒级脉冲电压的电光测量[J]. 清华大学学报(自然科学版), 1997, 0(4) |
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| 作者姓名： | 郭小明 苏进喜 罗承沐 张贵新 |
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| 作者单位： | 清华大学电机工程与应用电子技术系 |
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| 基金项目： | 国家自然科学基金,电工科学技术基金 |
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| 摘 要： | 为避免强电磁脉冲ＥＭＰ（ｅｌｅｃｔｒｏｍａｇｎｅｔｉｃｐｕｌｓｅ）的瞬间电场对军用和民用设施产生很大的破坏，准确测量ＥＭＰ的高速变化的电场，从而利用铌酸锂（ＬｉＮｂＯ３）晶体的电光效应，采用横向运行方式，研制成电压、电场传感器。以理论分析和计算作定性估计，指导调整光学器件；巧妙利用机械加工的精确度保证传感器上光学器件的相对定位和准直；用实验调整进行定量研究。利用纳秒脉冲电压发生器（ＭＦＤ－１）产生的方波电压，对此传感器性能进行了测试，测试结果表明：传感器上升时间小于５ｎｓ（波形有一点过冲）和７ｎｓ（波形无过冲）；测量误差在５％左右。
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| 关 键 词： | 电压、电场测量；电光效应；电压传感器；光纤电压传感器 |
Electro optical measurement of pulsed voltage with nanosecond risetime |
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| Guo Xiaoming,Su Jinxi,Luo Chengmu,Zhang Guixin. Electro optical measurement of pulsed voltage with nanosecond risetime[J]. Journal of Tsinghua University(Science and Technology), 1997, 0(4) |
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| Authors: | Guo Xiaoming Su Jinxi Luo Chengmu Zhang Guixin |
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| Affiliation: | Guo Xiaoming,Su Jinxi,Luo Chengmu,Zhang Guixin Department of Electrical Engineering,Tsinghua University,Beijing 100084 |
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| Abstract: | The transient electric field of highly intense electromagnetic pulse (EMP) will seriously damage the military and civil installations, so it is significantly important to measure such electric field with nanosecond risetime. In this paper a sensor of electric voltage and electric field was developed by employing electro optical effect of LiNbO 3 crystal with transversal modulation. The interrelated optical axises of the components were adjusted on the basis of the theoretical analysis and calculations. The collimation of optical components of the sensor was kept by machining. The characteristics of the sensor were tested by using nanosecond voltage generator (MFD 1). The results show that the risetime of the sensor is less than 5 ns (waveform with little over shot) and 7 ns (waveform without overshot), the measurement error is appraximately 5%. |
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| Keywords: | measurement of voltage and electrical field electro optical effect electrical voltage sensor fiber electrical voltage sensor |
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