Interferometric fiber optic accelerometer
Brown, David A.
Garrett, Steven L.
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A push-pull fiber optic accelerometer using a Michelson interferometer to detect the surface strains produced on a pair of coaxial flexing disks is described. The sensitivity below the disk's fundamental resonance of 2.45 kHz is 50 radians/g. The fractional phase change per unit force A4/AF is 5.9 x 106 W1 . A noteworthy feature of this sensor is that the 5 meter sensing coils comprising the legs of the interferometer are totally internal to the sensor structure and thus are not exposed to platform or fluid under investigation.
The article of record as published may be found at http://dx.doi.org/10.1117/12.24756SPIE Microelectronic Interconnect and Integrated ProcessingSymposium, 1990, San Jose, United States
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