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