发明名称 |
LOW-NOISE FIBER-OPTIC SENSOR UTILIZING A LASER SOURCE |
摘要 |
A fiber-optic sensor includes an optical fiber coil and a laser source optically coupled to the coil. Light from the source is transmitted to the coil as a first optical signal and a second optical signal counter-propagating through the coil. The optical paths of the first optical signal and the second optical signal are substantially reciprocal with one another and the first optical signal and the second optical signal are combined together after counter-propagating through the coil to generate a third optical signal. The laser source is frequency-modulated or can have a coherence length longer than a length of the coil.
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申请公布号 |
US2011176140(A1) |
申请公布日期 |
2011.07.21 |
申请号 |
US201113027873 |
申请日期 |
2011.02.15 |
申请人 |
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY |
发明人 |
BLIN STEPHANE;DIGONNET MICHEL J.F.;KINO GORDON S.;LLOYD SETH |
分类号 |
G01C19/72 |
主分类号 |
G01C19/72 |
代理机构 |
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代理人 |
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地址 |
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