| 光纤超外差干涉测量系统的研究 |
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| 引用本文： | 张存满,赵洋,李达成.光纤超外差干涉测量系统的研究[J].光学技术,1999(5). |
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| 作者姓名： | 张存满 赵洋 李达成 |
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| 作者单位： | 清华大学精密测试技术与仪器国家重点实验室,北京,100084 |
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| 摘 要： | 提出了一种用于绝对距离测量的光纤超外差干涉系统，简述了该方案的原理，给出了信号处理的框图，并进行了初步实验。对系统的误差分析表明，在光强较弱、信噪比差的情况下，光学元件的非理想特性以及测量信号与参考信号之间的耦合是引起测量误差的主要原因。
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| 关 键 词： | 绝对距离测量 光纤超外差干涉 信号处理 相位误差 |
Study on the fiber optical super-heterodyne absolute distance interferometer |
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| ZHANG Cun-man,ZHAO Yang,LI Da-cheng.Study on the fiber optical super-heterodyne absolute distance interferometer[J].Optical Technique,1999(5). |
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| Authors: | ZHANG Cun-man ZHAO Yang LI Da-cheng |
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| Abstract: | A fiber optical super heterodyne absolute distance interferometer (ADI) is proposed. The principle of the ADI is briefly reviewed with the signal processing method presented. Experiment shows that the system can not be used in practice without the improvement of photo detector's signal to noise ratio (SNR). The property of the optical elements and signal coupling between the measurement and reference respond for the main errors. |
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| Keywords: | absolute distance measurement fiber optical super heterodyne ADI signal processing phase measurement error |
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