Abstract

We demonstrate depth-resolved spectral absorption measurements in the wavelength range from 750 to 850nm using a broadband light source consisting of three spectrally shifted superluminescent light- emitting diode modules and a low-cost spectrometer-based Fourier-domain optical coherence tomography system. We present the theoretical model and experimental verification of interferences between autocorrelation terms and the signal carrying cross-correlation terms, strongly affecting the absorption measurements. A simple background subtraction, minimizing the artifacts caused by the interferences of autocorrelation and cross-correlation terms, is presented.

© 2010 Optical Society of America

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