| 光纤激光干涉测速 |
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| 引用本文： | 王小鹏,何勇,李建欣,朱日宏.光纤激光干涉测速[J].东南大学学报(自然科学版),2009(Z2). |
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| 作者姓名： | 王小鹏 何勇 李建欣 朱日宏 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院;西安应用光学研究所; |
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| 摘 要： | 为了测量运动物体的速度,基于多普勒效应构建了光纤速度干涉仪.系统由光源发射器与接收器、非对称马赫-曾德尔光纤干涉仪、光电接收系统、数据处理4个部分组成.光电接收探测器采集不同时刻运动物体的反射光波形成的干涉条纹,通过对数据进行分析和计算,获得运动物体的运动速度和加速度剖面.在霍普金森杆测量实验中,为获得具有良好对比度的干涉条纹,激光光源谱带宽应优于50kHz,功率稳定度为0.07dB,测速范围和测量精度由光纤干涉仪的延迟光纤长度决定.干涉仪的标定可通过测量延迟光纤长度为100m时的条纹常数来实现.测量结果表明,由干涉信号求得的膛口速度和由光触发脉冲求得的膛口速度之间的误差在1‰以内.
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| 关 键 词： | 速度 光纤干涉仪 数据处理 标定 |
Velocity test by fiber laser interferometer |
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| Wang Xiaopeng, He Yong Li Jianxin Zhu Rihong.Velocity test by fiber laser interferometer[J].Journal of Southeast University(Natural Science Edition),2009(Z2). |
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| Authors: | Wang Xiaopeng He Yong Li Jianxin Zhu Rihong |
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| Institution: | Wang Xiaopeng1,2 He Yong1 Li Jianxin1 Zhu Rihong1 (1 School of Electronic Engineering , Optoelectronic Technology,Nanjing University of Science , Technology,Nanjing 210094,China) (2 Xi'an Institute of Applied Optics,Xi'an 710100,China) |
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| Abstract: | To measure the speed of a moving object,a fiber velocity interferometer system is constructed based on the Doppler effect.The system consists of a light source transmitter and receiver,an asymmetric Mach-Zehnder fiber interferometer,an optical receiving system and data processing.The photodetector receives interference fringes formed by reflection light waves of moving objects at different moments.The velocity and the acceleration section of the moving object are obtained through data analysis and calculati... |
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| Keywords: | velocity fiber interferometer data processing calibration |
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