Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-09-01
1991-02-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356345, H01J 516
Patent
active
049946684
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.
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Bucaro Joseph A.
Lagakos Nicholas
Edelberg Barry A.
McDonnell Thomas E.
Nelms David C.
The United States of America as represented by the Secretary of
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