Absolute displacement measurement by using the synthesized modulation index of a frequency-modulated interferometer
作者:
Lih-Wuu Chang,
Ching-Ting Lee,
Pie-Yau Chien,
期刊:
Review of Scientific Instruments
(AIP Available online 1997)
卷期:
Volume 68,
issue 8
页码: 3085-3087
ISSN:0034-6748
年代: 1997
DOI:10.1063/1.1148281
出版商: AIP
数据来源: AIP
摘要:
A novel absolute displacement measurement by using a heterodyne interferometer, with a frequency-modulated laser diode has been successfully implemented. In this signal processing scheme, the synthesized modulation index of a phase-modulated interferometer is used for measuring the displacement, which is independent of the variation of the modulation frequency. The error induced from the intensity modulation in the laser diode can be eliminated. ©1997 American Institute of Physics.
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