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Doppler calibration method for Spectral Domain OCT spectrometers
Author(s) -
Faber Dirk J.,
Leeuwen Ton G. van
Publication year - 2009
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.200910018
Subject(s) - spectrometer , calibration , optics , resolution (logic) , wavelength , doppler effect , spectral resolution , sampling (signal processing) , fourier transform , pixel , imaging spectrometer , physics , remote sensing , computer science , spectral line , artificial intelligence , geology , detector , quantum mechanics , astronomy
We present a calibration method for SD‐OCT domain spectrometers based on the M‐scan of a moving mirror. This method allows determination of the wavenumber sampling increment which determines the depth axis assigned to the structural image. It also allows wavelength calibration of individual pixels which ensures correct re‐sampling prior to Fast Fourier Transform. Determination of the spectrometer resolution, which determines sensitivity and resolution decay with depth, is also possible. The wavelength calibration results suggest that hardware calibration of the spectrometers is a necessary complement to the computational methods presented here. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)