Measurement of rotation rate using Sagnac effect

Details Measurement of rotation rate using Sagnac effect Measurement of rotation rate using Sagnac effect

1980-12-30

1983-05-10

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

043826814

ABSTRACT:
In a Sagnac effect optical fibre gyroscope a commutating switch (SW) is included immediately before the Sagnac coil (C). Operation of the switch synthesises turning the coil upside down. This provides the advantages of producing an a.c. signal in response to a constant rotation rate and in certain arrangements remove a source of systematic error occasioned by drift in optical parameters of unbalanced components.

REFERENCES:
patent: 4208128 (1980-06-01), Thompson et al.
patent: 4280766 (1981-07-01), Goss et al.
"Techniques for Shot Noise Limited Inertial Rotation Measurement Using a Multiturn Fiber Sagnac Interferometer", Davis et al., SPIE vol. 157 Laser Inertial Rotation Sensors (1978) pp. 131-136.

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