Fiber Optic Acoustic Sensor.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 28, 1978
- Accession Number
- ADD005203
Entities
People
- Edward F. Carome
- Henry D. Dardy
- Joseph A. Bucaro
Organizations
- United States Department of the Navy