1. Articles from Long Chen

    1-2 of 2
    1. Cubic meter volume optical coherence tomography

      Cubic meter volume optical coherence tomography

      Optical coherence tomography (OCT) is a powerful three-dimensional (3D) imaging modality with micrometer-scale axial resolution and up to multi-GigaVoxel/s imaging speed. However, the imaging range of high-speed OCT has been limited. Here, we report 3D OCT over cubic meter volumes using a long coherence length, 1310 nm vertical-cavity surface-emitting laser and silicon photonic integrated circuit dual-quadrature receiver technology combined with enhanced signal processing. We achieved 15 μm depth resolution for tomographic imaging at a 100 kHz axial scan rate over a 1.5 m range. We show 3D macroscopic imaging examples of a human mannequin, bicycle, machine shop gauge ...

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    2. Silicon photonic integrated circuit swept-source optical coherence tomography receiver with dual polarization, dual balanced, in-phase and quadrature detection

      Silicon photonic integrated circuit swept-source optical coherence tomography receiver with dual polarization, dual balanced, in-phase and quadrature detection

      Optical coherence tomography (OCT) is a widely used three-dimensional (3D) optical imaging method with many biomedical and non-medical applications. Miniaturization, cost reduction, and increased functionality of OCT systems will be critical for future emerging clinical applications. We present a silicon photonic integrated circuit swept-source OCT (SS-OCT) coherent receiver with dual polarization, dual balanced, in-phase and quadrature (IQ) detection. We demonstrate multiple functional capabilities of IQ polarization resolved detection including: complex-conjugate suppressed full-range OCT, polarization diversity detection, and polarization-sensitive OCT. To our knowledge, this is the first demonstration of a silicon photonic integrated receiver for OCT. The integrated coherent receiver provides ...

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    1-2 of 2
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  2. Topics in the News

    1. (3 articles) National Institutes of Health
    2. (2 articles) Massachusetts Institute of Technology
    3. (2 articles) James G. Fujimoto
    4. (2 articles) Zhao Wang
    5. (2 articles) Hsiang-Chieh Lee
    6. (2 articles) Harvard University
    7. (2 articles) Northwestern University
    8. (1 articles) Eric A. Swanson
    9. (1 articles) Alex E. Cable
    10. (1 articles) Vijay Jayaraman
    11. (1 articles) Benjamin M. Potsaid
    12. (1 articles) Thorlabs
    13. (1 articles) Praevium Research
    14. (1 articles) University of Southern California
    15. (1 articles) Texas A&M University
    16. (1 articles) FDA
    17. (1 articles) Dresden University of Technology
    18. (1 articles) Edmund Koch
    19. (1 articles) Lars Kirsten
    20. (1 articles) Javier A. Jo
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