Accession Number : ADD011186

Title :   Optical Resonatior Single-Mode Fiber Hydrophone.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : McLandrich,M N ; Albares,D J

Report Date : 01 May 1984

Pagination or Media Count : 4

Abstract : A hydrophone remotely senses impinging acoustic energy. Light output from a laser is split and launched into a single-mode fiber which transmits it to an optical resonator at its end. The resonator is made up of a fixed fiber end having a dielectric coating and a movable mirror which is displaced in response to an incident acoustic signal. The acoustic signal displaces the mirror so that mirror movement modulates the intensity of the reflected beam which is transmitted back through the single-mode fiber and received at a detector. The frequency and magnitude of the reflected beam yield acoustic signal information. (Author)

Descriptors :   *Patents, *Hydrophones, *Fiber optics, *Resonators, Remote detectors, Acoustic signals, Laser beams, Beam splitting, Mirrors, Reflection, Dielectric properties, Coatings, Impingement

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE