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A time delay correction technique for SS-OCT.

Yi Wang, Xiaodong Chen, Xiaojie Chen

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    |January 13, 2016
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    Summary
    This summary is machine-generated.

    This study introduces a numerical method to fix time delays in swept-source optical coherence tomography (SS-OCT) systems. The technique significantly improves signal alignment, enhancing sample tomography and characteristic analysis.

    Keywords:
    (070.0070) fourier optics and signal processing(070.4340) nonlinear optical signal processing(080.1753) computation methods(110.4500) Optical coherence tomography (OCT)(350.5730) resolution

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    Area of Science:

    • Optical Engineering
    • Biomedical Imaging

    Background:

    • K-trigger signals in swept-source optical coherence tomography (SS-OCT) are crucial for signal sampling and resolution.
    • System complexity introduces time delays, causing misalignment between k-trigger and interference signals.

    Purpose of the Study:

    • To present a numerical technique for correcting time delays in SS-OCT systems.
    • To improve the accuracy of interference signal sampling and resolution enhancement.

    Main Methods:

    • Iterative time delay correction.
    • Evaluation of correction accuracy using the full width at half maximum (FWHM) of time-domain peaks.
    • Minimizing FWHM indicates precise alignment.

    Main Results:

    • Experimental validation of the proposed time delay correction technique.
    • Achieved up to a 50% improvement in FWHM.

    Conclusions:

    • The technique enables precise sample tomography.
    • Enhances the understanding of sample characteristics through improved imaging.