Vibration-displacement measurement employing phase tracking technique with an optical fiber Michelson interferometer

Sen Ma; Zhaoying Li; Fang Xie

doi:10.1117/12.906092

30 November 2011 Vibration-displacement measurement employing phase tracking technique with an optical fiber Michelson interferometer

Sen Ma, Zhaoying Li, Fang Xie

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Proceedings Volume 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 82011R (2011) https://doi.org/10.1117/12.906092
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

A vibration-displacement measurement system by tracking the phase variation of an optical fiber Michelson interferometer with an electronic feedback loop is presented. The measurement system includes an electronic feedback loop which is used to track the phase variation induced by the measured vibration-displacement and provides a sense of direction of the displacement simultaneously. The measurement system is designed to be capable of measuring vibration-displacement with frequencies up to 200Hz and the measurement resolution can reach 13nm.

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Sen Ma, Zhaoying Li, and Fang Xie "Vibration-displacement measurement employing phase tracking technique with an optical fiber Michelson interferometer", Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 82011R (30 November 2011); https://doi.org/10.1117/12.906092

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KEYWORDS

Feedback loops

Mirrors

Ferroelectric materials

Michelson interferometers

Optical fibers

Signal detection

Interferometry

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