Accession Number : ADD016474

Title :   Fiber Optic Pressure and/or Vibration Detector.

Descriptive Note : Patent Application, Filed 18 May 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cuomo, Frank W

Report Date : 18 May 1994

Pagination or Media Count : 23

Abstract : A fiber optic pressure/vibration sensor for measuring pressure variations due to acoustic waves or the like and/or measuring vibrations of a body under test is described. The sensor includes a light source, a multimode single optical fiber for transmission of light from the light source from one end thereof to a fiber optic probe having a reflector at the other end of the optic fiber. The movement of the reflector under the influence of impinge acoustic waves or the vibrations of a body under test modulates of the light. The reflected light is carried by the same single optical fiber to a fiber optic couple which sends the reflected light through another coupled optical fiber on to a photodetector to generate and measure the electrical signals produced due to the pressure variations or vibrations of the body under test.

Descriptors :   *PATENT APPLICATIONS, *ACOUSTOOPTICS, ACOUSTIC WAVES, ACOUSTICS, FIBER OPTICS, LIGHT SOURCES, MULTIMODE, OPTICS, PHOTODETECTORS, PRESSURE, PROBES, REFLECTORS, SIGNALS, TEST AND EVALUATION, VIBRATION, FIBER OPTICS TRANSMISSION LINES, TRANSDUCERS, MICROPHONES, OPTICAL DETECTORS

Subject Categories : Fiber Optics and Integrated Optics
      Acoustooptic and Optoacoustic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE