VARIABLE COUPLER FIBER OPTIC SENSOR HYDROPHONE
Assignee
SPERRY MARINE INC.
Filed
Jul 6, 1989
Granted
Sep 23, 1997
Location
CHARLOTTESVILLE VA US
Abstract
A rigid plate with an aperture therethrough has a variable coupler fiber optic sensor encapsulated in the aperture by an encapsulant having an index of refraction that varies with applied stress. Incident light applied to an input fiber of the coupler is coupled to the output fibers thereof in a ratio dependent on the stress applied to the encapsulant. In an alternative embodiment, a well in a member superposed with respect to the plate is filled with a low bulk modulus material which abuts the encapsulant.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 5, 1990
Rescinded
Feb 20, 1996
Duration
5 years, 11 months
Inventor
- 1DAVID W. GERDT
Record Details
- Patent number
- US 5671191
- Application
- 07376342
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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