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Proceedings Paper

Modulation-amplitude-locked laser diode interferometry for distance measurement
Author(s): Takamasa Suzuki; Tatsuo Iwana; Osami Sasaki
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Paper Abstract

This paper describes a range-finder that uses two feedback loops. Each feedback loop is respectively used to control the phase and the modulation-amplitude in a sinusoidal phase-modulating interference signal. It enables us to perform unambiguous measurement and real-time processing on the interference signal. Also external disturbance superimposed on the interference signal is eliminated by the feedback control. A distributed-Bragg-reflector laser diode that has wide range in wavelength-tuning allows us to improve the measurement accuracy.

Paper Details

Date Published: 26 February 2004
PDF: 7 pages
Proc. SPIE 5265, Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology, (26 February 2004); doi: 10.1117/12.518640
Show Author Affiliations
Takamasa Suzuki, Niigata Univ. (Japan)
Tatsuo Iwana, Niigata Univ. (Japan)
Osami Sasaki, Niigata Univ. (Japan)

Published in SPIE Proceedings Vol. 5265:
Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology
Bruce G. Batchelor; Heinz Hugli, Editor(s)

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