Accession Number : ADD008102

Title :   Fiber-Optic Acoustic Sensor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bucaro,Joseph A ; Carome,Edward F

Report Date : 09 Dec 1980

Pagination or Media Count : 4

Abstract : This report describes an optical fiber acoustical sensor for detecting sound waves in a fluid medium. An optical fiber coil through which a light beam is transmitted is placed in a fluid medium. A sound wave propagating through the fluid medium and incident on the optical fiber coil changes the index of refraction and the length of the optical fiber at the area of incidence. These changes cause a shift in the transmitted light which is detectable to denote the presence of the sound wave.

Descriptors :   *Patents, *Acoustooptics, *Fiber optics, *Acoustic detection, Sound waves, Sound pressure, Refractive index, Phase modulation, Optical interferometers, Laser beams, Argon lasers, Coils

Subject Categories : Acoustic Detection and Detectors
      Acoustics
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE