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All-fiber few-mode optical coherence tomography using a modally-specific photonic lantern

Martin Poinsinet de Sivry-Houle, Simon Bolduc Beaudoin, Simon Brais-Brunet, Mathieu Dehaes, Nicolas Godbout and Caroline Boudoux

Article (2021)

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Optical coherence tomography (OCT) was recently performed using a few-mode (FM) fiber to increase contrast or improve resolution using a sequential time-domain demultiplexing scheme isolating the different interferometric signals of the mode-coupled backscattered light. Here, we present an all-fiber FM-OCT system based on a parallel modal demultiplexing scheme exploiting a novel modally-specific photonic lantern (MSPL). The MSPL allows for maximal fringe visibility for each fiber propagation mode in an all-fiber assembly which provides the robustness required for clinical applications. The custom-built MSPL was designed for OCT at 930 nm and is wavelength-independent over the broad OCT spectrum. We further present a comprehensive coupling model for the interpretation of FM-OCT images using the first two propagation modes of a few-mode fiber, validate its predictions, and demonstrate the technique using in vitro microbead phantoms and ex vivo biological samples.

Subjects: 1900 Biomedical engineering > 1900 Biomedical engineering
1900 Biomedical engineering > 1901 Biomedical technology
3100 Physics > 3110 Optics (see also Photon devices, 2505)
3100 Physics > 3112 Photonics
Department: Department of Engineering Physics
Institut de génie biomédical
Funders: Fonds de Recherche du Québec - Santé, CRSNG / NSERC
Grant number: 32600, RGPIN-06404-2016, RGPIN-2015-04672, RGPIN-2018- 06151, RTI-2016-00636
PolyPublie URL: https://publications.polymtl.ca/9354/
Journal Title: Biomedical Optics Express (vol. 12, no. 9)
Publisher: Optica Publishing Group
DOI: 10.1364/boe.428101
Official URL: https://doi.org/10.1364/boe.428101
Date Deposited: 06 Sep 2023 13:07
Last Modified: 07 Apr 2024 02:06
Cite in APA 7: de Sivry-Houle, M. P., Beaudoin, S. B., Brais-Brunet, S., Dehaes, M., Godbout, N., & Boudoux, C. (2021). All-fiber few-mode optical coherence tomography using a modally-specific photonic lantern. Biomedical Optics Express, 12(9), 5704-5719. https://doi.org/10.1364/boe.428101


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