Patent ID: 6473183
Filing Date: 2002-10-29
Classification: G01H,G01P

Abstract:
A fiber optic sensor that includes a flexural disk having a pair of fiber optic coils mounted on opposite sides thereof and connected together to form an interferometer that produces a sensor output signal in response to acceleration of the flexural disk, comprising:a housing having first and second end plates with a sidewall extending therebetween, the sidewall having an inwardly facing groove therein, the flexural disk having an outer edge portion mounted in the inward facing groove, the flexural disk having a central passage therethrough; a support member extending between oppositely facing portions of the first and second end plates and extending through the central passage in the flexural disk with an inner edge of the central passage being spaced apart from the support member; and a damping member mounted on the central support member and arranged to exert a radial force on the inner edge of the flexural disk to dampen vibrations of the flexural member and thereby control the sensor output signal amplitude over a selected frequency range.