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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 4 — Feb. 1, 2013
  • pp: B52–B59

High-accuracy sinusoidal phase-modulating self-mixing interferometer using an electro-optic modulator: development and evaluation

Wei Xia, Ming Wang, Zhenyu Yang, Wenhua Guo, Hui Hao, and Dongmei Guo  »View Author Affiliations

Applied Optics, Vol. 52, Issue 4, pp. B52-B59 (2013)

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A sinusoidal phase-modulating He–Ne laser subject to weak optical feedback has been used to develop an interferometer that is capable of performing real-time displacement measurement with nanometer accuracy. The principle and the signal processing method are introduced. A commercial dual-frequency interferometer is included in the displacement measurement in both small and large ranges to evaluate the performance of the developed interferometer. Experimental results show that the average errors and standard deviations of the interferometer are in good agreement with data obtained from the commercial interferometer. The resolution and the multiple feedback effect of the interferometer are discussed in detail. These results show that the development of the interferometer is reasonable and feasible.

© 2013 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.5060) Instrumentation, measurement, and metrology : Phase modulation

Original Manuscript: June 25, 2012
Revised Manuscript: November 1, 2012
Manuscript Accepted: December 20, 2012
Published: January 21, 2013

Wei Xia, Ming Wang, Zhenyu Yang, Wenhua Guo, Hui Hao, and Dongmei Guo, "High-accuracy sinusoidal phase-modulating self-mixing interferometer using an electro-optic modulator: development and evaluation," Appl. Opt. 52, B52-B59 (2013)

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