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Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography

Xavier Attendu, Roosje M. Ruis, Caroline Boudoux, Ton G. van Leeuwen and Dirk J. Faber

Article (2019)

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Cite this document: Attendu, X., Ruis, R. M., Boudoux, C., van Leeuwen, T. G. & Faber, D. J. (2019). Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography. Journal of Biomedical Optics, 24(5), p. 1-11. doi:10.1117/1.jbo.24.5.056001
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Abstract

In Fourier-domain optical coherence tomography (FD-OCT), proper signal sampling and dispersion compensation are essential steps to achieve optimal axial resolution. These calibration steps can be performed through numerical signal processing, but require calibration information about the system that may require lengthy and complex measurement protocols. We report a highly robust calibration procedure that can simultaneously determine correction vectors for nonlinear wavenumber sampling and dispersion compensation. The proposed method requires only two simple mirror measurements and no prior knowledge about the system's illumination source or detection scheme. This method applies to both spectral domain and swept-source OCT systems. Furthermore, it may be implemented as a low-cost fail-safe to validate the proper function of calibration hardware such as k-clocks. We demonstrate the method's simple implementation, effectiveness, and robustness on both types of OCT systems.

Uncontrolled Keywords

calibration; dispersion compensation; k-linearization; optical coherence tomography; signal processing

Open Access document in PolyPublie
Subjects: 3100 Physique > 3100 Physique
3100 Physique > 3108 Méthodes expérimentales et instrumentation
3100 Physique > 3110 Optique (voir aussi Dispositifs photoniques, 2505)
Department: Département de génie physique
Research Center: COPL - Centre d'optique, photonique et laser
Funders: Netherlands Organization for Scientific Research (Applied and Engineering Sciences), iMIT-OBAMA, CRSNG/NSERC, TransMedTech, Canada First Research Excellence Fund (CFREF), Fonds de Recherche du Quebec—Nature et Technologies (FRQNT)
Grant number: 12708
Date Deposited: 12 Mar 2021 14:33
Last Modified: 08 Apr 2021 10:42
PolyPublie URL: https://publications.polymtl.ca/4759/
Document issued by the official publisher
Journal Title: Journal of Biomedical Optics (vol. 24, no. 5)
Publisher: SPIE
Official URL: https://doi.org/10.1117/1.jbo.24.5.056001

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