Novel calibration method for optical coherence tomography instruments using multiple spectrometers

Gianni Nteroli; Lucy Abbott; Rasmus D. Engelsholm; Patrick Bowen Montague; Adrian Podoleanu; Adrian Bradu

doi:10.1117/12.2670909

11 August 2023 Novel calibration method for optical coherence tomography instruments using multiple spectrometers

Gianni Nteroli, Lucy Abbott, Rasmus D. Engelsholm, Patrick Bowen Montague, Adrian Podoleanu, Adrian Bradu

Proceedings Volume 12632, Optical Coherence Imaging Techniques and Imaging in Scattering Media V; 126320E (2023) https://doi.org/10.1117/12.2670909
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

Abstract

In this report, a novel calibration method is introduced, which can be used in camera-based Optical Coherence Tomography (OCT) instruments employing several spectrometers. To ensure that all spectrometers are calibrated, i.e. they sense the same spectral range and the distribution of the optical frequencies across the pixels of the cameras is the same, a hybrid method was used involving (i) a hardware procedure for an initial estimation of the edges of the spectra and (ii) a numerical Monte-Carlo based technique. The utility of such a procedure is demonstrated in an OCT system using a Balance-Detection (BD) scheme. The OCT system employs a single transmission diffraction grating and is driven by a supercontinuum source operating in the visible spectral range. Spectral alignment is paramount in producing high-sensitivity images free of artefacts. To ensure correct calibration, and speed up the calibration procedure, the Master-Slave (MS) technique of generating axial reflectivity profiles is employed. Preliminary results show an improvement of the signal of ~ 3dB and a mitigation of the background noise of over 5 dB.

Citation Download Citation

Gianni Nteroli, Lucy Abbott, Rasmus D. Engelsholm, Patrick Bowen Montague, Adrian Podoleanu, and Adrian Bradu "Novel calibration method for optical coherence tomography instruments using multiple spectrometers", Proc. SPIE 12632, Optical Coherence Imaging Techniques and Imaging in Scattering Media V, 126320E (11 August 2023); https://doi.org/10.1117/12.2670909

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
3 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Optical coherence tomography

Calibration

Spectrometers

Equipment

Cameras

Optical calibration

Spectral calibration

Show All Keywords

Keywords/Phrases

Search In:

Publication Years