Coherent light generators – Particular beam control device – Having particular beam control circuit component
Patent
1993-02-26
1994-09-27
Lee, John D.
Coherent light generators
Particular beam control device
Having particular beam control circuit component
356350, 372 94, H01S 1966, H01S 3083
Patent
active
053512529
ABSTRACT:
A Brillouin fiber optic gyroscope having a feedback system which monitors the difference between counterpropagating Brillouin intensities and utilizes this difference in the form of a correction signal to control one of the circulating pump intensities so as to equalize the circulating pump intensities. The Brillouin fiber optic gyroscope further includes a second feedback system which detects electrical signals proportional to the phase-modulated, counterpropagating intensities in the gyroscope, and utilizes a combination of the electrical signals as an error signal to stabilize the resonant cavity at a length substantially equal to a length midway between the resonant lengths of the counterpropagating pump signals. The Brillouin fiber optic gyroscope of the present invention also provides a dynamic range of the gyroscope rotation rate that is twice the dynamic range of existing gyroscopes.
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Huang Shangyuan
Kim Byoung Y.
Shaw Herbert J.
Toyama Keiichiro
Lee John D.
The Board of Trustees of the Leland Stanford University
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