Fiber-Optic Accelerometer Having Cantilevered Acceleration-Sensitive Mass.
Patent, Filed 10 Apr 87,
DEPARTMENT OF THE NAVY WASHINGTON DC
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An optical fiber accelerometer with a rectilinear actuator, such as a push rod, acting on a missile region of an optical fiber pass tautly strung between two supports so that linear actuator motion during sensed acceleration causes lateral displacement of the passs middle region causing nonlinear i.e., quadratic strain in the fiber. This nonlinear response allows the accelerometer to detect acceleration signals in a noisy, low-frequency signal environment through use of a high frequency signal carrier whose amplitude is determined by a low frequency measured acceleration signal using an optical fiber interferometer. rh
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