Fiber Optic Acoustic Sensor.

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Abstract:

This patent application is on 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 of the optical fiber at the area of incidence. The index change causes a phase shift in the transmitted light which is detectable to denote the presence of the sound wave. Author

Author(s):
Bucaro, Joseph A. ; Carome, Edward F. ; Dardy, Henry D.
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON D C
Descriptive Note:
Patent Application,
Pagination:
0010

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And, Possibly, For Foreign Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-920 088
 Subject Terms
Communities of Interest:
Sensors
Descriptor(s):
*Patent applications, *Acoustic detectors, Fiber optics, Optical interferometers, Sound waves, Signal processing, Refractive index, Phase shift
Field(s)/Group(s):
Acoustic Detection and Detectors
Keyword(s):
*Fiber optic acoustic sensors
Report Date:
1978 Jun 28