| 利用Fabry—Perot结构测量压电晶体的特性曲线 |
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| 引用本文： | 毕卫红,郑绳楦.利用Fabry—Perot结构测量压电晶体的特性曲线[J].仪表技术与传感器,1999(5):37-40. |
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| 作者姓名： | 毕卫红 郑绳楦 |
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| 作者单位： | 哈尔滨工业大学精密仪器系，燕山大学光电子工程系 |
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| 摘 要： | 提出利用Ｆａｂｒｙ－Ｐｅｒｏｔ干涉结构测量压电晶体的特性曲线，即利用光纤Ｆａｂｒｙ－Ｐｅｒｏｔ干涉腔将ＰＺＴ的径向（或长度）的变化转为相位的变化，再通过光电转换进行电信号的处理得到相位所对应的ＰＺＴ陶瓷径向（或长度）的变化，文章给出实测的实验室用ＰＺＴ曲线。实验表明：该方法简单、测量精度高且能实现实时测量。
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| 关 键 词： | 光纤 干涉 压电晶体 特性 |
The Measurement of the Characteristic Curve of Piezocrystal with the Fabry-Perot Structure |
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| Bi Weihong Qiang Xifu Dept.of Precision Instrument,Harbin University of Polytechnology,Harbin Zheng Shengxuan Dept. of Photonics,Yanshan University,Qinhuangdao Hebei.The Measurement of the Characteristic Curve of Piezocrystal with the Fabry-Perot Structure[J].Instrument Technique and Sensor,1999(5):37-40. |
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| Authors: | Bi Weihong Qiang Xifu Deptof Precision Instrument Harbin University of Polytechnology Harbin Zheng Shengxuan Dept of Photonics Yanshan University Qinhuangdao Hebei |
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| Affiliation: | Bi Weihong Qiang Xifu Dept.of Precision Instrument,Harbin University of Polytechnology,Harbin 150001 Zheng Shengxuan Dept. of Photonics,Yanshan University,Qinhuangdao Hebei 066004 |
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| Abstract: | Piezocrystal is applied widely in the optical measurement, precision engineering and study of optical fiber sensor. In this paper, the characteristic curve of piezocrystal is measured with the Fabry-Perot structure. The Fabry-Perot interferential cave consisting of optical fiber end and PZT surface turns the displacement change of PZT to optical phase change, The phototube and signal presses system inverse the phase change to the displacement change. Here, the characteristic curve of piezocrystal used in our laboratory proves that the measurement method is correct. |
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| Keywords: | Optic Fiber Interferometric Piezocrystal Characteristic Curve |
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