Fiber optic gyroscope operating with unpolarized light source

Details Fiber optic gyroscope operating with unpolarized light source Fiber optic gyroscope operating with unpolarized light source

1983-03-24

1987-03-31

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964, G01B 902

Patent

active

046539174

ABSTRACT:
A fiber optic gyroscope comprising a Sagnac interferometer including a (3.times.3) optical directional coupler. The gyroscope is driven with an essentially unpolarized broadband spatially coherent light beam supplied by a super-luminescent diode source. A significant reduction in baseband noise occurs due to the use of the essentially unpolarized light beam.

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