发明名称 |
Technique of reducing the Kerr effect and extending the dynamic range in a Brillouin fiber optic gyroscope |
摘要 |
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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申请公布号 |
US5351252(A) |
申请公布日期 |
1994.09.27 |
申请号 |
US19930023672 |
申请日期 |
1993.02.26 |
申请人 |
THE BOARD OF TRUSTEES OF THE LELAND STANFORD UNIVERSITY |
发明人 |
TOYAMA, KEIICHIRO;KIM, BYOUNG Y.;HUANG, SHANGYUAN;SHAW, HERBERT J. |
分类号 |
G01C19/72;H01S3/30;(IPC1-7):H01S19/66;H01S3/083 |
主分类号 |
G01C19/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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