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; Dirk J. Faber

doi:10.1117/1.JBO.24.5.056001

13 May 2019 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, Dirk J. Faber

Author Affiliations +

Journal of Biomedical Optics, Vol. 24, Issue 5, 056001 (May 2019). https://doi.org/10.1117/1.JBO.24.5.056001

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.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Xavier Attendu, Roosje M. Ruis, Caroline Boudoux, Ton G. van Leeuwen, and Dirk J. Faber "Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography," Journal of Biomedical Optics 24(5), 056001 (13 May 2019). https://doi.org/10.1117/1.JBO.24.5.056001

Received: 13 December 2018; Accepted: 19 March 2019; Published: 13 May 2019

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Cited by 24 scholarly publications and 2 patents.

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KEYWORDS

Calibration

Optical coherence tomography

Mirrors

Interferometers

Image resolution

Imaging systems

Signal processing

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