Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1985-08-05
1987-01-13
Kreitman, Stephen A.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
356349, G01P 1508
Patent
active
046354824
ABSTRACT:
In a Sagnac-type of laser accelerometer, a common waveguide transducing element has oppositely rotating optical beams therein which are subsequently combined in a detection circuit to provide an output indicative of acceleration perpendicular to the plane of the transducing element. The counter rotating beams are ninety degrees polarized while passing through the transducer, so that only one beam is affected by the stress forces. The beams are shifted to the same polarization before interference fringes are developed on the detector.
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Bush Freddie M.
Chapman, Jr. John E.
Garvin, Jr. John C.
Kreitman Stephen A.
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