PHASE-INVERTED SIDELOBE-ANNIHILATED OPTICAL COHERENCE TOMOGRAPHY
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Aug 13, 2014
filing date -
Aug 13, 2014
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Abstract
An optical coherent tomographic imaging system includes means for introducing a 180-degree phase inversion in the interference fringes, and generating a two-peak shape point spread function (PSF) in the frequency domain for the interference-based tomographic imaging system. The system further includes means for achieving sharper resolution than the diffraction-limited spectral bandwidth in the tomographic imaging system through subtracting the two-peak shape from the original Gaussian PSF. Means are provided for removing the ghost fringes in the tomographic imaging system, which is introduced by the self-interference between the different layers of the sample arm. The apparatus is configured to realize the real-time super-resolution swept-source optical coherent tomography (OCT) such that the sensitivity of the system is enhanced by suppressing the noise floor in the frequency domain, as well as removing the ghost fringes.
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