发明名称 |
Optical phase measurement of target |
摘要 |
<p>Optical phase detection includes generating a first wavelength having a first polarization and a second lightwave having a polarization that is offset from the first polarization, and imposing (52) a relative delay between the first and second lightwaves. The relative delay causes a frequency offset between the lightwaves as wavelength is tuned over a designated wavelength range. Directing (54) the first and second lightwaves to a target (T) provides a third lightwave and a fourth lightwave. A polarization component of the third lightwave and a polarization component of the fourth lightwave are detected (56) to provide a detected signal at the frequency offset. The optical phase detection then includes extracting (58) a phase difference, induced by the target, between the polarization components of the third and the fourth lightwaves.
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申请公布号 |
EP1574832(A3) |
申请公布日期 |
2007.02.28 |
申请号 |
EP20050251331 |
申请日期 |
2005.03.04 |
申请人 |
AGILENT TECHNOLOGIES, INC. |
发明人 |
VANWIGGEREN, GREGORY D.;ROITMAN, DANIEL B. |
分类号 |
G01J9/00;G01N21/21;G01N21/27;G01N21/55;G01N21/39 |
主分类号 |
G01J9/00 |
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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