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Proceedings Paper

Feedback type of laser diode interferometer with an optical fiber
Author(s): Takamasa Suzuki; Takao Okada; Osami Sasaki; Takeo Maruyama
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Paper Abstract

A laser diode interferometer which uses an optical fiber is proposed. The laser diode simultaneously functions as a light source, a phase modulator, and a phase compensator. The detection of the vibration and the reduction of external disturbance are carried out, by using a feedback control for the injection current of the laser diode. So it can measure the vibration accurately in real time with a simple signal processing circuit. The optical fiber not only functions as a flexible probe, enabling us to measure the vibration of the object that cannot be moved onto the vibration absorption board, it also acts as a reference mirror, thereby simplifying the unit construction.

Paper Details

Date Published: 17 July 1996
PDF: 7 pages
Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); doi: 10.1117/12.276309
Show Author Affiliations
Takamasa Suzuki, Niigata Univ. (Japan)
Takao Okada, Niigata Univ. (Japan)
Osami Sasaki, Niigata Univ. (Japan)
Takeo Maruyama, Niigata Univ. (Japan)

Published in SPIE Proceedings Vol. 2860:
Laser Interferometry VIII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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