ACOUSTO-OPTICAL MARINE SENSOR ARRAY
Assignee
WESTERN GEOPHYSICAL CO. OF AMERICA, A CORP. OF DE.
Filed
Apr 19, 1985
Granted
Sep 24, 1991
Location
HOUSTON TX US
Abstract
An acousto-optical seismic sensor array includes a distributed set of optical-fiber sensing coils. A light pulse is launched through the sensing coils in serial order. The light pulse is cumulatively data-modulated by the respective sensing coils and is returned as a time-division multiplexed pulse train. The pulse train is split into a first pulse train and a retarded second pulse train. The retardation time equals the travel-time delay of a light pulse between sensors. The retarded pulse train is compared with the first pulse train to determine the phase shift therebetween for consecutive pulses. The phase shift is an analog of the quantity being sensed.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Dec 16, 1985
Rescinded
May 6, 1991
Duration
5 years, 4 months
Inventor
- 1THOMAS J. POORMAN
Record Details
- Patent number
- US 5051965
- Application
- 06724884
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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