Triaxial fiber optic Sagnac interferometer with single source an

Details Triaxial fiber optic Sagnac interferometer with single source an Triaxial fiber optic Sagnac interferometer with single source an

1991-05-28

1993-02-02

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

051841959

ABSTRACT:
A triaxial Sagnac interferometer employs a single source of optical energy and a single photodetector. An optical fiber network interconnects the source and the photodetector with three fiber optic gyroscopes. A phase modulator is associated with each of the gyroscopes for applying a phase difference bias. The modulators are controlled by a common control circuit. The outputs of the modulators are divided into three distinct modes. During any one mode, two of the three gyroscopes are blanked so that the composite output comprises a readily interpreted serial presentation of individual gyroscope data.

REFERENCES:
patent: 4588296 (1986-05-01), Cahill et al.
patent: 4828389 (1989-05-01), Gubbins et al.

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