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Proceedings Paper

Correction of phase delay caused by mixer and lowpass filter in heterodyne interferometer
Author(s): Ming Yang; Chenguang Cai; Ying Wang; Zhihua Liu; Haijiang Zhu
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Paper Abstract

Phase response is an essential parameter of vibration sensors in primary vibration calibration, heterodyne interferometer was usually used to obtain this parameter. To reduce sampling rate of heterodyne interferometer signal and sampling number, analog mixer and lowpass filter are used to down-convert the interferometer signal. However, the using of analog devices will introduce additional phase delay for the measurement of the phase response, it leads to the measurement by the calibration is unreliable. A novel correction of phase delay method was proposed to precisely measure the phase response of the vibration sensors. Experiment results show the performance of the proposed correction method.

Paper Details

Date Published: 24 October 2017
PDF: 6 pages
Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104570E (24 October 2017); doi: 10.1117/12.2282262
Show Author Affiliations
Ming Yang, Beijing Univ. of Chemical Technology (China)
Chenguang Cai, National Institute of Metrology (China)
Ying Wang, Beijing Univ. of Chemical Technology (China)
Zhihua Liu, National Institute of Metrology (China)
Haijiang Zhu, Beijing Univ. of Chemical Technology (China)


Published in SPIE Proceedings Vol. 10457:
AOPC 2017: Laser Components, Systems, and Applications
Shibin Jiang; Lijun Wang; Lan Jiang; Long Zhang, Editor(s)

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