Device for measuring a phase shift which is not reciprocal produced in a ring interferometer
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United States of America Patent
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Oct 15, 1991
Grant Date -
N/A
app pub date -
Oct 6, 1981
filing date -
Nov 7, 1980
priority date (Note) -
Expired
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Abstract
A ring-shaped interferometer device containing optical means for phase shifting which act on the rays passing through the rings, these means containing an oscillator which delivers a periodic voltage of frequency 1/2.tau., in which .tau. is the time taken by a ray to pass through the ring and a saw-tooth generator whose resonant frequency is slaved to the non reciprocal phase shift.
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