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17 July 1996 Feedback type of laser diode interferometer with an optical fiber
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takamasa Suzuki, Takao Okada, Osami Sasaki, and Takeo Maruyama "Feedback type of laser diode interferometer with an optical fiber", Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996);

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