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Chip-based frequency comb sources for optical coherence tomography.

Xingchen Ji, Xinwen Yao, Alexander Klenner

    Optics Express
    |September 11, 2019
    PubMed
    Summary
    This summary is machine-generated.

    Chip-based frequency combs offer a novel light source for optical coherence tomography (OCT). This study demonstrates their compatibility with OCT systems, enabling high-quality human tissue imaging.

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    Area of Science:

    • Photonics
    • Biomedical Imaging
    • Optical Engineering

    Background:

    • Optical coherence tomography (OCT) is a key medical imaging technique.
    • Superluminescent diodes (SLDs) are conventional light sources for OCT.
    • Chip-based frequency combs are emerging as potential broadband light sources.

    Purpose of the Study:

    • To demonstrate chip-based frequency combs as a viable light source for OCT.
    • To assess the compatibility and performance of these combs in OCT systems.
    • To enable fully integrated OCT systems.

    Main Methods:

    • Generation of frequency combs using chip-scale microresonators.
    • Design of combs with specific spectral line spacing (0.21 nm) for imaging range.
    • Operation in a non-phase locked regime for high conversion efficiency (30%).

    Main Results:

    • Demonstrated frequency combs as a novel light source for OCT.
    • Achieved imaging range comparable to commercial OCT systems.
    • Enabled human tissue imaging with quality matching commercial sources.
    • Showcased compatibility with standard spectral domain (SD) OCT systems.

    Conclusions:

    • Chip-based frequency combs are suitable light sources for OCT.
    • This technology paves the way for fully integrated OCT systems.
    • The demonstrated combs offer comparable performance to existing commercial sources.