A phase modulated optical heterodyne Interferometer to detect VLF vibrations

Year: 1980

Authors: Bassan M., Ciliberto S.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: A new method to measure subsonic vibrations of very small amplitude is presented. It makes use of an interferometric system plus a phase modulation of the laser light source. The accuracy is limited only by the shot noise of the laser. Some considerations are reported concerning the frequency spectrum of the signal and the signal to noise ratio. The experimental results show a good agreement with theory.

Journal/Review: OPTICA ACTA

Volume: 27 (8)      Pages from: 1253  to: 1262

KeyWords: fibre optics; optoelectronics;
DOI: 10.1080/713820372

Citations: 3
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