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