Method for stress tuning fiber optic sensor coils

Details Method for stress tuning fiber optic sensor coils Method for stress tuning fiber optic sensor coils

1998-07-28

2000-03-21

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

060409088

ABSTRACT:
A method and apparatus for reducing the temperature-dependent Shupe bias of a potted gyro sensor coil pack to near-zero is provided by selectively adjusting the manner in which CCW and CW fiber leads are attached to the coil pack or the coil mount. The invention recognizes the inevitable existence of a strain differential between the CW and CCW-wound portions of a symmetrically-wound fiber coil. Leads affixed to the ends of the CW and CCW-wound halves of the coil are selectively bonded in accordance with principles for creating a counteracting temperature-dependent stress differential whereby temperature-dependent Shupe bias is substantially eliminated from the gyro output.

REFERENCES:
patent: 5329349 (1994-07-01), Patterson et al.
patent: 5371593 (1994-12-01), Cordova et al.
patent: 5546482 (1996-08-01), Cordova et al.
patent: 5847829 (1998-12-01), Corvoda

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