Accession Number : ADD014922

Title :   Planar Fiber-Optic Interferometer Acoustic Sensor.

Descriptive Note : Patent, Filed 1 Sep 89, patented 19 Feb 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lagakos, Nicholas ; Bucaro, Joseph A

Report Date : 19 Feb 1991

Pagination or Media Count : 12

Abstract : A sensing portion for an interferometric acousto-optic sensor and a sensor using that sensing fiber are disclosed. The sensor fiber has an outer coating of a material having a low bulk modulus. This coating greatly enhances the sensitivity of the sensor fiber. In a preferred embodiment, the material of low bulk modulus embeds the sensor fiber and any included reference fiber. Most preferably, the material having a low bulk modulus is a polymer such as polyurethane. The sensing portions made according to the present invention will usually be incorporated into sensors used for underwater exploration.

Descriptors :   ACOUSTOOPTICS, BULK MODULUS, COATINGS, DETECTORS, EXTERNAL, FIBERS, INTERFEROMETRY, POLYURETHANE RESINS, UNDERWATER

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE