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:

1991-02-19

Pagination or Media Count:

12.0

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