Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Reexamination Certificate
2008-04-15
2008-04-15
Turner, Samuel A. (Department: 2877)
Optics: measuring and testing
By light interference
Using fiber or waveguide interferometer
Reexamination Certificate
active
11009717
ABSTRACT:
A system for tomographic imaging includes a source of at least partially coherent radiation, a frequency-swept laser source and an interferometer. The radiation in the interferometer is phase modulated at a modulation frequency for elimination of DC and autocorrelation noises as well as the mirror image. The interference fringes of the radiation backscattered from the sample into the interferometer are detected to obtain a spectral signal. The spectral signal of the detected backscattered interference fringes is transformed to obtain a location dependent signal at each pixel location in a data window. A tomographic image of the fluid flow in the data window is generated for display and of the structure of the scanned fluid flow sample in the data window from the location dependent signal is generated.
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Chen Zhongping
Nelson J. Stuart
Zhang Jun
Myers Dawes Andras & Sherman LLP
The Regents of the University of California
Turner Samuel A.
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