Doppler calibration method for Spectral Domain OCT spectrometers.
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.
Faber
Dirk J
DJ
Ophthalmology and Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, PO Box 22700, 1100 DE Amsterdam, The Netherlands. d.j.faber@amc.uva.nl
van Leeuwen
Ton G
TG
D002138:Calibration; D004301:Doppler Effect; D009038:Motion; D013057:Spectrum Analysis / Q000379:methods*; D013997:Time Factors; D041623:Tomography, Optical Coherence / Q000379:methods*