Abstract

A displacement measurement system using a fiber-optic interferometer fringe projector with a feedback control system is presented and demonstrated. The system utilizes the integrating bucket method to detect the desired phase or the displacement and Fresnel reflection signal to realize measurement of the disturbance and feed it back to the modulated signal of the laser at the same time. The continuous signal truly reflects the error information, as the output light and reflected light share the same optical path. Practical experiments validate the feasibility of this method.

© 2014 Optical Society of America

Fiber-optic interferometer fringe projection using integrating bucket modulation

Duan Fajie, Lv Changrong, Zhang Chao, Duan Xiaojie, and Zhang Fukai
J. Opt. Soc. Am. A 29(12) 2552-2556 (2012)

Disturbance-free high-speed sinusoidal phase-modulating laser diode interferometer

Takamasa Suzuki, Toshiyuki Maki, Xuefeng Zhao, and Osami Sasaki
Appl. Opt. 41(10) 1949-1953 (2002)

Phase-locked laser diode interferometer: high-speed feedback control system

Takamasa Suzuki, Osmai Sasaki, Katsuhiro Higuchi, and Takeo Maruyama
Appl. Opt. 30(25) 3622-3626 (1991)

Sinusoidal phase modulating interferometer using optical fibers for displacement measurement

Osami Sasaki and Kazuhide Takahashi
Appl. Opt. 27(19) 4139-4142 (1988)

Closed-loop phase stepping in a calibrated fiber-optic fringe projector for shape measurement

Andrew J. Moore, Roy McBride, James S. Barton, and Julian D. C. Jones
Appl. Opt. 41(16) 3348-3354 (2002)