Distributed fiber optic acoustic sensor

Yuri N. Kulchin; Oleg B. Vitrik; Yuri S. Petrov; Oleg V. Kirichenko

doi:10.1117/12.187391

21 September 1994 Distributed fiber optic acoustic sensor

Yuri N. Kulchin, Oleg B. Vitrik, Yuri S. Petrov, Oleg V. Kirichenko

Proceedings Volume 2294, Distributed and Multiplexed Fiber Optic Sensors IV; (1994) https://doi.org/10.1117/12.187391
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

The principles of operation of distributed fiber-optic seismoacoustic sensor based on intermode interference in low mode fibers are studied. A model of this sensor for seismo-acoustic vibrations registration was made and tested. This sensor has the following performances: working frequency band is 2 - 40 Hz, transformation coefficient is 1.5 mV(DOT)s²/m at frequency 20 Hz, sensitivity threshold is 1.6(DOT)10^-3 m/s², sensor length is 100 m. Interferometric procedures of signal forming and processing were researched.

Citation Download Citation

Yuri N. Kulchin, Oleg B. Vitrik, Yuri S. Petrov, and Oleg V. Kirichenko "Distributed fiber optic acoustic sensor", Proc. SPIE 2294, Distributed and Multiplexed Fiber Optic Sensors IV, (21 September 1994); https://doi.org/10.1117/12.187391

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