Numerical calibration method for a multiple spectrometer-based OCT system

The present paper introduces a numerical calibration method for the easy and practical implementation of multiple spectrometer-based spectral-domain optical coherence tomography (SD-OCT) systems. To address the limitations of the traditional hardware-based spectrometer alignment across more than one...

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Bibliographic Details
Published inBiomedical optics express Vol. 13; no. 3; pp. 1685 - 1701
Main Authors Miao, Yusi, Song, Jun, Hsu, Destiny, Ng, Ringo, Jian, Yifan, Sarunic, Marinko V, Ju, Myeong Jin
Format Journal Article
LanguageEnglish
Published United States Optica Publishing Group 01.03.2022
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Summary:The present paper introduces a numerical calibration method for the easy and practical implementation of multiple spectrometer-based spectral-domain optical coherence tomography (SD-OCT) systems. To address the limitations of the traditional hardware-based spectrometer alignment across more than one spectrometer, we applied a numerical spectral calibration algorithm where the pixels corresponding to the same wavelength in each unit are identified through spatial- and frequency-domain interferometric signatures of a mirror sample. The utility of dual spectrometer-based SD-OCT imaging is demonstrated through retinal imaging at two different operation modes with high-speed and dual balanced acquisitions, respectively, in which the spectral alignment is critical to achieve improved retinal image data without any artifacts caused by misalignment of the spectrometers.
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ISSN:2156-7085
2156-7085
DOI:10.1364/BOE.450942