Differential laser gyro readout

Details Differential laser gyro readout Differential laser gyro readout

1978-01-05

1980-04-15

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902, G01P 900

Patent

active

041981634

ABSTRACT:
A differential laser gyro, of the type having four modes, to define a first gyro operating with both clockwise and anticlockwise right circular polarized circulating waves, and a second gyro operating with clockwise and anticlockwise left circular polarized circulating waves, is provided with reflective optical readout paths in which the anticlockwise waves are coupled through an odd number of mirrors (or vice versa), and then through a mode-combining beam splitter, to provide two colinear beams, each including all four modes, to identical assemblies of polarization conversion and discrimination means and heterodyning detectors.

REFERENCES:
patent: 3862803 (1975-01-01), Yntema et al.
patent: 3892486 (1975-07-01), Ferrar
patent: 4000947 (1977-01-01), Grant, Jr.

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