Potted fiber optic gyro sensor coil for stringent vibration and

Details Potted fiber optic gyro sensor coil for stringent vibration and Potted fiber optic gyro sensor coil for stringent vibration and

1994-06-27

1996-08-13

Ngo, John

Optical waveguides

Optical waveguide sensor

242173, 356350, 385100, G02B 604

Patent

active

055464823

ABSTRACT:
A sensor coil for a fiber optic gyroscope is potted in polymer-based material selected for avoiding such temperature-related anomalies as bias spikes and bias crossings. The potting material is based upon a silicone composition characterized by a glass transition temperature that lies below and outside the operational range required for commercial or military operation. Predetermined fillers may be added to the silicone for bolstering stiffness (Young's modulus) within the polymer's rubbery region to reduce the gyro's bias sensitivity to vibration. Excellent bias thermal and vibration performance has been achieved with coils potted in silicone adhesive with a carbon-black filler.

REFERENCES:
patent: 4699451 (1987-10-01), Mohr
patent: 4834493 (1989-05-01), Cahill et al.
patent: 5095514 (1992-03-01), Curtis
patent: 5168539 (1992-12-01), Negishi et al.
patent: 5245687 (1993-09-01), Usui

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